400996480

素因数分解:

$2^7\times 5^1\times {\mathrm{47}}^1\times {\mathrm{13331}}^1$

素因数の和:13397

約数の個数: 64

約数和(自身を含む): 979102080

約数和(自身を除く): 578105600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 47, 64, 80, 94, 128, 160, 188, 235, 320, 376, 470, 640, 752, 940, 1504, 1880, 3008, 3760, 6016, 7520, 13331, 15040, 26662, 30080, 53324, 66655, 106648, 133310, 213296, 266620, 426592, 533240, 626557, 853184, 1066480, 1253114, 1706368, 2132960, 2506228, 3132785, 4265920, 5012456, 6265570, 8531840, 10024912, 12531140, 20049824, 25062280, 40099648, 50124560, 80199296, 100249120, 200498240, 400996480]

約数ペア:

[(1, 400996480), (2, 200498240), (4, 100249120), (5, 80199296), (8, 50124560), (10, 40099648), (16, 25062280), (20, 20049824), (32, 12531140), (40, 10024912), (47, 8531840), (64, 6265570), (80, 5012456), (94, 4265920), (128, 3132785), (160, 2506228), (188, 2132960), (235, 1706368), (320, 1253114), (376, 1066480), (470, 853184), (640, 626557), (752, 533240), (940, 426592), (1504, 266620), (1880, 213296), (3008, 133310), (3760, 106648), (6016, 66655), (7520, 53324), (13331, 30080), (15040, 26662)]