20818816

素因数分解:

$2^7\times {\mathrm{41}}^1\times {\mathrm{3967}}^1$

素因数の和:4022

約数の個数: 32

約数和(自身を含む): 42497280

約数和(自身を除く): 21678464

約数列:

[1, 2, 4, 8, 16, 32, 41, 64, 82, 128, 164, 328, 656, 1312, 2624, 3967, 5248, 7934, 15868, 31736, 63472, 126944, 162647, 253888, 325294, 507776, 650588, 1301176, 2602352, 5204704, 10409408, 20818816]

約数ペア:

[(1, 20818816), (2, 10409408), (4, 5204704), (8, 2602352), (16, 1301176), (32, 650588), (41, 507776), (64, 325294), (82, 253888), (128, 162647), (164, 126944), (328, 63472), (656, 31736), (1312, 15868), (2624, 7934), (3967, 5248)]