19703980

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{26627}}^1$

素因数の和:26673

約数の個数: 24

約数和(自身を含む): 42498288

約数和(自身を除く): 22794308

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 370, 740, 26627, 53254, 106508, 133135, 266270, 532540, 985199, 1970398, 3940796, 4925995, 9851990, 19703980]

約数ペア:

[(1, 19703980), (2, 9851990), (4, 4925995), (5, 3940796), (10, 1970398), (20, 985199), (37, 532540), (74, 266270), (148, 133135), (185, 106508), (370, 53254), (740, 26627)]