18859640

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{12743}}^1$

素因数の和:12791

約数の個数: 32

約数和(自身を含む): 43584480

約数和(自身を除く): 24724840

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 12743, 25486, 50972, 63715, 101944, 127430, 254860, 471491, 509720, 942982, 1885964, 2357455, 3771928, 4714910, 9429820, 18859640]

約数ペア:

[(1, 18859640), (2, 9429820), (4, 4714910), (5, 3771928), (8, 2357455), (10, 1885964), (20, 942982), (37, 509720), (40, 471491), (74, 254860), (148, 127430), (185, 101944), (296, 63715), (370, 50972), (740, 25486), (1480, 12743)]