399400960

素因数分解:

$2^{13}\times 5^1\times 7^2\times {\mathrm{199}}^1$

素因数の和:244

約数の個数: 168

約数和(自身を含む): 1120597200

約数和(自身を除く): 721196240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 128, 140, 160, 196, 199, 224, 245, 256, 280, 320, 392, 398, 448, 490, 512, 560, 640, 784, 796, 896, 980, 995, 1024, 1120, 1280, 1393, 1568, 1592, 1792, 1960, 1990, 2048, 2240, 2560, 2786, 3136, 3184, 3584, 3920, 3980, 4096, 4480, 5120, 5572, 6272, 6368, 6965, 7168, 7840, 7960, 8192, 8960, 9751, 10240, 11144, 12544, 12736, 13930, 14336, 15680, 15920, 17920, 19502, 20480, 22288, 25088, 25472, 27860, 28672, 31360, 31840, 35840, 39004, 40960, 44576, 48755, 50176, 50944, 55720, 57344, 62720, 63680, 71680, 78008, 89152, 97510, 100352, 101888, 111440, 125440, 127360, 143360, 156016, 178304, 195020, 200704, 203776, 222880, 250880, 254720, 286720, 312032, 356608, 390040, 401408, 407552, 445760, 501760, 509440, 624064, 713216, 780080, 815104, 891520, 1003520, 1018880, 1248128, 1426432, 1560160, 1630208, 1783040, 2007040, 2037760, 2496256, 2852864, 3120320, 3566080, 4075520, 4992512, 5705728, 6240640, 7132160, 8151040, 9985024, 11411456, 12481280, 14264320, 19970048, 24962560, 28528640, 39940096, 49925120, 57057280, 79880192, 99850240, 199700480, 399400960]

約数ペア:

[(1, 399400960), (2, 199700480), (4, 99850240), (5, 79880192), (7, 57057280), (8, 49925120), (10, 39940096), (14, 28528640), (16, 24962560), (20, 19970048), (28, 14264320), (32, 12481280), (35, 11411456), (40, 9985024), (49, 8151040), (56, 7132160), (64, 6240640), (70, 5705728), (80, 4992512), (98, 4075520), (112, 3566080), (128, 3120320), (140, 2852864), (160, 2496256), (196, 2037760), (199, 2007040), (224, 1783040), (245, 1630208), (256, 1560160), (280, 1426432), (320, 1248128), (392, 1018880), (398, 1003520), (448, 891520), (490, 815104), (512, 780080), (560, 713216), (640, 624064), (784, 509440), (796, 501760), (896, 445760), (980, 407552), (995, 401408), (1024, 390040), (1120, 356608), (1280, 312032), (1393, 286720), (1568, 254720), (1592, 250880), (1792, 222880), (1960, 203776), (1990, 200704), (2048, 195020), (2240, 178304), (2560, 156016), (2786, 143360), (3136, 127360), (3184, 125440), (3584, 111440), (3920, 101888), (3980, 100352), (4096, 97510), (4480, 89152), (5120, 78008), (5572, 71680), (6272, 63680), (6368, 62720), (6965, 57344), (7168, 55720), (7840, 50944), (7960, 50176), (8192, 48755), (8960, 44576), (9751, 40960), (10240, 39004), (11144, 35840), (12544, 31840), (12736, 31360), (13930, 28672), (14336, 27860), (15680, 25472), (15920, 25088), (17920, 22288), (19502, 20480)]