81587960

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{55127}}^1$

素因数の和:55175

約数の個数: 32

約数和(自身を含む): 188537760

約数和(自身を除く): 106949800

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 55127, 110254, 220508, 275635, 441016, 551270, 1102540, 2039699, 2205080, 4079398, 8158796, 10198495, 16317592, 20396990, 40793980, 81587960]

約数ペア:

[(1, 81587960), (2, 40793980), (4, 20396990), (5, 16317592), (8, 10198495), (10, 8158796), (20, 4079398), (37, 2205080), (40, 2039699), (74, 1102540), (148, 551270), (185, 441016), (296, 275635), (370, 220508), (740, 110254), (1480, 55127)]