19980354

素因数分解:

$2^1\times 3^1\times {\mathrm{109}}^1\times {\mathrm{137}}^1\times {\mathrm{223}}^1$

素因数の和:474

約数の個数: 32

約数和(自身を含む): 40803840

約数和(自身を除く): 20823486

約数列:

[1, 2, 3, 6, 109, 137, 218, 223, 274, 327, 411, 446, 654, 669, 822, 1338, 14933, 24307, 29866, 30551, 44799, 48614, 61102, 72921, 89598, 91653, 145842, 183306, 3330059, 6660118, 9990177, 19980354]

約数ペア:

[(1, 19980354), (2, 9990177), (3, 6660118), (6, 3330059), (109, 183306), (137, 145842), (218, 91653), (223, 89598), (274, 72921), (327, 61102), (411, 48614), (446, 44799), (654, 30551), (669, 29866), (822, 24307), (1338, 14933)]