19518980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{2029}}^1$

素因数の和:2088

約数の個数: 48

約数和(自身を含む): 45358320

約数和(自身を除く): 25839340

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 37, 52, 65, 74, 130, 148, 185, 260, 370, 481, 740, 962, 1924, 2029, 2405, 4058, 4810, 8116, 9620, 10145, 20290, 26377, 40580, 52754, 75073, 105508, 131885, 150146, 263770, 300292, 375365, 527540, 750730, 975949, 1501460, 1951898, 3903796, 4879745, 9759490, 19518980]

約数ペア:

[(1, 19518980), (2, 9759490), (4, 4879745), (5, 3903796), (10, 1951898), (13, 1501460), (20, 975949), (26, 750730), (37, 527540), (52, 375365), (65, 300292), (74, 263770), (130, 150146), (148, 131885), (185, 105508), (260, 75073), (370, 52754), (481, 40580), (740, 26377), (962, 20290), (1924, 10145), (2029, 9620), (2405, 8116), (4058, 4810)]