20851288

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{151}}^1\times {\mathrm{421}}^1$

素因数の和:619

約数の個数: 32

約数和(自身を含む): 40410720

約数和(自身を除く): 19559432

約数列:

[1, 2, 4, 8, 41, 82, 151, 164, 302, 328, 421, 604, 842, 1208, 1684, 3368, 6191, 12382, 17261, 24764, 34522, 49528, 63571, 69044, 127142, 138088, 254284, 508568, 2606411, 5212822, 10425644, 20851288]

約数ペア:

[(1, 20851288), (2, 10425644), (4, 5212822), (8, 2606411), (41, 508568), (82, 254284), (151, 138088), (164, 127142), (302, 69044), (328, 63571), (421, 49528), (604, 34522), (842, 24764), (1208, 17261), (1684, 12382), (3368, 6191)]