20966416

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{1031}}^1$

素因数の和:1111

約数の個数: 40

約数和(自身を含む): 42997248

約数和(自身を除く): 22030832

約数列:

[1, 2, 4, 8, 16, 31, 41, 62, 82, 124, 164, 248, 328, 496, 656, 1031, 1271, 2062, 2542, 4124, 5084, 8248, 10168, 16496, 20336, 31961, 42271, 63922, 84542, 127844, 169084, 255688, 338168, 511376, 676336, 1310401, 2620802, 5241604, 10483208, 20966416]

約数ペア:

[(1, 20966416), (2, 10483208), (4, 5241604), (8, 2620802), (16, 1310401), (31, 676336), (41, 511376), (62, 338168), (82, 255688), (124, 169084), (164, 127844), (248, 84542), (328, 63922), (496, 42271), (656, 31961), (1031, 20336), (1271, 16496), (2062, 10168), (2542, 8248), (4124, 5084)]