640827776

素因数分解:

$2^7\times {\mathrm{79}}^1\times {\mathrm{127}}^1\times {\mathrm{499}}^1$

素因数の和:719

約数の個数: 64

約数和(自身を含む): 1305600000

約数和(自身を除く): 664772224

約数列:

[1, 2, 4, 8, 16, 32, 64, 79, 127, 128, 158, 254, 316, 499, 508, 632, 998, 1016, 1264, 1996, 2032, 2528, 3992, 4064, 5056, 7984, 8128, 10033, 10112, 15968, 16256, 20066, 31936, 39421, 40132, 63373, 63872, 78842, 80264, 126746, 157684, 160528, 253492, 315368, 321056, 506984, 630736, 642112, 1013968, 1261472, 1284224, 2027936, 2522944, 4055872, 5006467, 5045888, 8111744, 10012934, 20025868, 40051736, 80103472, 160206944, 320413888, 640827776]

約数ペア:

[(1, 640827776), (2, 320413888), (4, 160206944), (8, 80103472), (16, 40051736), (32, 20025868), (64, 10012934), (79, 8111744), (127, 5045888), (128, 5006467), (158, 4055872), (254, 2522944), (316, 2027936), (499, 1284224), (508, 1261472), (632, 1013968), (998, 642112), (1016, 630736), (1264, 506984), (1996, 321056), (2032, 315368), (2528, 253492), (3992, 160528), (4064, 157684), (5056, 126746), (7984, 80264), (8128, 78842), (10033, 63872), (10112, 63373), (15968, 40132), (16256, 39421), (20066, 31936)]