19811012

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{331}}^1\times {\mathrm{1151}}^1$

素因数の和:1499

約数の個数: 24

約数和(自身を含む): 37481472

約数和(自身を除く): 17670460

約数列:

[1, 2, 4, 13, 26, 52, 331, 662, 1151, 1324, 2302, 4303, 4604, 8606, 14963, 17212, 29926, 59852, 380981, 761962, 1523924, 4952753, 9905506, 19811012]

約数ペア:

[(1, 19811012), (2, 9905506), (4, 4952753), (13, 1523924), (26, 761962), (52, 380981), (331, 59852), (662, 29926), (1151, 17212), (1324, 14963), (2302, 8606), (4303, 4604)]