218908818

素因数分解:

$2^1\times 3^4\times {\mathrm{1351289}}^1$

素因数の和:1351303

約数の個数: 20

約数和(自身を含む): 490518270

約数和(自身を除く): 271609452

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 1351289, 2702578, 4053867, 8107734, 12161601, 24323202, 36484803, 72969606, 109454409, 218908818]

約数ペア:

[(1, 218908818), (2, 109454409), (3, 72969606), (6, 36484803), (9, 24323202), (18, 12161601), (27, 8107734), (54, 4053867), (81, 2702578), (162, 1351289)]