128446640

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{31}}^1\times {\mathrm{151}}^1$

素因数の和:216

約数の個数: 160

約数和(自身を含む): 361881600

約数和(自身を除く): 233434960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 49, 56, 62, 70, 80, 98, 112, 124, 140, 151, 155, 196, 217, 245, 248, 280, 302, 310, 343, 392, 434, 490, 496, 560, 604, 620, 686, 755, 784, 868, 980, 1057, 1085, 1208, 1240, 1372, 1510, 1519, 1715, 1736, 1960, 2114, 2170, 2416, 2480, 2744, 3020, 3038, 3430, 3472, 3920, 4228, 4340, 4681, 5285, 5488, 6040, 6076, 6860, 7399, 7595, 8456, 8680, 9362, 10570, 10633, 12080, 12152, 13720, 14798, 15190, 16912, 17360, 18724, 21140, 21266, 23405, 24304, 27440, 29596, 30380, 32767, 36995, 37448, 42280, 42532, 46810, 51793, 53165, 59192, 60760, 65534, 73990, 74896, 84560, 85064, 93620, 103586, 106330, 118384, 121520, 131068, 147980, 163835, 170128, 187240, 207172, 212660, 229369, 258965, 262136, 295960, 327670, 374480, 414344, 425320, 458738, 517930, 524272, 591920, 655340, 828688, 850640, 917476, 1035860, 1146845, 1310680, 1605583, 1834952, 2071720, 2293690, 2621360, 3211166, 3669904, 4143440, 4587380, 6422332, 8027915, 9174760, 12844664, 16055830, 18349520, 25689328, 32111660, 64223320, 128446640]

約数ペア:

[(1, 128446640), (2, 64223320), (4, 32111660), (5, 25689328), (7, 18349520), (8, 16055830), (10, 12844664), (14, 9174760), (16, 8027915), (20, 6422332), (28, 4587380), (31, 4143440), (35, 3669904), (40, 3211166), (49, 2621360), (56, 2293690), (62, 2071720), (70, 1834952), (80, 1605583), (98, 1310680), (112, 1146845), (124, 1035860), (140, 917476), (151, 850640), (155, 828688), (196, 655340), (217, 591920), (245, 524272), (248, 517930), (280, 458738), (302, 425320), (310, 414344), (343, 374480), (392, 327670), (434, 295960), (490, 262136), (496, 258965), (560, 229369), (604, 212660), (620, 207172), (686, 187240), (755, 170128), (784, 163835), (868, 147980), (980, 131068), (1057, 121520), (1085, 118384), (1208, 106330), (1240, 103586), (1372, 93620), (1510, 85064), (1519, 84560), (1715, 74896), (1736, 73990), (1960, 65534), (2114, 60760), (2170, 59192), (2416, 53165), (2480, 51793), (2744, 46810), (3020, 42532), (3038, 42280), (3430, 37448), (3472, 36995), (3920, 32767), (4228, 30380), (4340, 29596), (4681, 27440), (5285, 24304), (5488, 23405), (6040, 21266), (6076, 21140), (6860, 18724), (7399, 17360), (7595, 16912), (8456, 15190), (8680, 14798), (9362, 13720), (10570, 12152), (10633, 12080)]