20997328

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{2251}}^1$

素因数の和:2323

約数の個数: 40

約数和(自身を含む): 45238176

約数和(自身を除く): 24240848

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 53, 88, 106, 176, 212, 424, 583, 848, 1166, 2251, 2332, 4502, 4664, 9004, 9328, 18008, 24761, 36016, 49522, 99044, 119303, 198088, 238606, 396176, 477212, 954424, 1312333, 1908848, 2624666, 5249332, 10498664, 20997328]

約数ペア:

[(1, 20997328), (2, 10498664), (4, 5249332), (8, 2624666), (11, 1908848), (16, 1312333), (22, 954424), (44, 477212), (53, 396176), (88, 238606), (106, 198088), (176, 119303), (212, 99044), (424, 49522), (583, 36016), (848, 24761), (1166, 18008), (2251, 9328), (2332, 9004), (4502, 4664)]