400529920

素因数分解:

$2^9\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{103}}^1$

素因数の和:171

約数の個数: 240

約数和(自身を含む): 1164354048

約数和(自身を除く): 763824128

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 49, 56, 62, 64, 70, 80, 98, 103, 112, 124, 128, 140, 155, 160, 196, 206, 217, 224, 245, 248, 256, 280, 310, 320, 392, 412, 434, 448, 490, 496, 512, 515, 560, 620, 640, 721, 784, 824, 868, 896, 980, 992, 1030, 1085, 1120, 1240, 1280, 1442, 1519, 1568, 1648, 1736, 1792, 1960, 1984, 2060, 2170, 2240, 2480, 2560, 2884, 3038, 3136, 3193, 3296, 3472, 3584, 3605, 3920, 3968, 4120, 4340, 4480, 4960, 5047, 5768, 6076, 6272, 6386, 6592, 6944, 7210, 7595, 7840, 7936, 8240, 8680, 8960, 9920, 10094, 11536, 12152, 12544, 12772, 13184, 13888, 14420, 15190, 15680, 15872, 15965, 16480, 17360, 17920, 19840, 20188, 22351, 23072, 24304, 25088, 25235, 25544, 26368, 27776, 28840, 30380, 31360, 31930, 32960, 34720, 39680, 40376, 44702, 46144, 48608, 50470, 51088, 52736, 55552, 57680, 60760, 62720, 63860, 65920, 69440, 79360, 80752, 89404, 92288, 97216, 100940, 102176, 111104, 111755, 115360, 121520, 125440, 127720, 131840, 138880, 156457, 161504, 178808, 184576, 194432, 201880, 204352, 223510, 230720, 243040, 255440, 263680, 277760, 312914, 323008, 357616, 369152, 388864, 403760, 408704, 447020, 461440, 486080, 510880, 555520, 625828, 646016, 715232, 777728, 782285, 807520, 817408, 894040, 922880, 972160, 1021760, 1251656, 1292032, 1430464, 1564570, 1615040, 1634816, 1788080, 1845760, 1944320, 2043520, 2503312, 2584064, 2860928, 3129140, 3230080, 3576160, 3888640, 4087040, 5006624, 5721856, 6258280, 6460160, 7152320, 8174080, 10013248, 11443712, 12516560, 12920320, 14304640, 20026496, 25033120, 28609280, 40052992, 50066240, 57218560, 80105984, 100132480, 200264960, 400529920]

約数ペア:

[(1, 400529920), (2, 200264960), (4, 100132480), (5, 80105984), (7, 57218560), (8, 50066240), (10, 40052992), (14, 28609280), (16, 25033120), (20, 20026496), (28, 14304640), (31, 12920320), (32, 12516560), (35, 11443712), (40, 10013248), (49, 8174080), (56, 7152320), (62, 6460160), (64, 6258280), (70, 5721856), (80, 5006624), (98, 4087040), (103, 3888640), (112, 3576160), (124, 3230080), (128, 3129140), (140, 2860928), (155, 2584064), (160, 2503312), (196, 2043520), (206, 1944320), (217, 1845760), (224, 1788080), (245, 1634816), (248, 1615040), (256, 1564570), (280, 1430464), (310, 1292032), (320, 1251656), (392, 1021760), (412, 972160), (434, 922880), (448, 894040), (490, 817408), (496, 807520), (512, 782285), (515, 777728), (560, 715232), (620, 646016), (640, 625828), (721, 555520), (784, 510880), (824, 486080), (868, 461440), (896, 447020), (980, 408704), (992, 403760), (1030, 388864), (1085, 369152), (1120, 357616), (1240, 323008), (1280, 312914), (1442, 277760), (1519, 263680), (1568, 255440), (1648, 243040), (1736, 230720), (1792, 223510), (1960, 204352), (1984, 201880), (2060, 194432), (2170, 184576), (2240, 178808), (2480, 161504), (2560, 156457), (2884, 138880), (3038, 131840), (3136, 127720), (3193, 125440), (3296, 121520), (3472, 115360), (3584, 111755), (3605, 111104), (3920, 102176), (3968, 100940), (4120, 97216), (4340, 92288), (4480, 89404), (4960, 80752), (5047, 79360), (5768, 69440), (6076, 65920), (6272, 63860), (6386, 62720), (6592, 60760), (6944, 57680), (7210, 55552), (7595, 52736), (7840, 51088), (7936, 50470), (8240, 48608), (8680, 46144), (8960, 44702), (9920, 40376), (10094, 39680), (11536, 34720), (12152, 32960), (12544, 31930), (12772, 31360), (13184, 30380), (13888, 28840), (14420, 27776), (15190, 26368), (15680, 25544), (15872, 25235), (15965, 25088), (16480, 24304), (17360, 23072), (17920, 22351), (19840, 20188)]