61781360

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{149}}^1$

素因数の和:306

約数の個数: 80

約数和(自身を含む): 148651200

約数和(自身を除く): 86869840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 73, 80, 142, 146, 149, 284, 292, 298, 355, 365, 568, 584, 596, 710, 730, 745, 1136, 1168, 1192, 1420, 1460, 1490, 2384, 2840, 2920, 2980, 5183, 5680, 5840, 5960, 10366, 10579, 10877, 11920, 20732, 21158, 21754, 25915, 41464, 42316, 43508, 51830, 52895, 54385, 82928, 84632, 87016, 103660, 105790, 108770, 169264, 174032, 207320, 211580, 217540, 414640, 423160, 435080, 772267, 846320, 870160, 1544534, 3089068, 3861335, 6178136, 7722670, 12356272, 15445340, 30890680, 61781360]

約数ペア:

[(1, 61781360), (2, 30890680), (4, 15445340), (5, 12356272), (8, 7722670), (10, 6178136), (16, 3861335), (20, 3089068), (40, 1544534), (71, 870160), (73, 846320), (80, 772267), (142, 435080), (146, 423160), (149, 414640), (284, 217540), (292, 211580), (298, 207320), (355, 174032), (365, 169264), (568, 108770), (584, 105790), (596, 103660), (710, 87016), (730, 84632), (745, 82928), (1136, 54385), (1168, 52895), (1192, 51830), (1420, 43508), (1460, 42316), (1490, 41464), (2384, 25915), (2840, 21754), (2920, 21158), (2980, 20732), (5183, 11920), (5680, 10877), (5840, 10579), (5960, 10366)]