208512880

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{151}}^1\times {\mathrm{421}}^1$

素因数の和:626

約数の個数: 80

約数和(自身を含む): 501092928

約数和(自身を除く): 292580048

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 151, 164, 205, 302, 328, 410, 421, 604, 656, 755, 820, 842, 1208, 1510, 1640, 1684, 2105, 2416, 3020, 3280, 3368, 4210, 6040, 6191, 6736, 8420, 12080, 12382, 16840, 17261, 24764, 30955, 33680, 34522, 49528, 61910, 63571, 69044, 86305, 99056, 123820, 127142, 138088, 172610, 247640, 254284, 276176, 317855, 345220, 495280, 508568, 635710, 690440, 1017136, 1271420, 1380880, 2542840, 2606411, 5085680, 5212822, 10425644, 13032055, 20851288, 26064110, 41702576, 52128220, 104256440, 208512880]

約数ペア:

[(1, 208512880), (2, 104256440), (4, 52128220), (5, 41702576), (8, 26064110), (10, 20851288), (16, 13032055), (20, 10425644), (40, 5212822), (41, 5085680), (80, 2606411), (82, 2542840), (151, 1380880), (164, 1271420), (205, 1017136), (302, 690440), (328, 635710), (410, 508568), (421, 495280), (604, 345220), (656, 317855), (755, 276176), (820, 254284), (842, 247640), (1208, 172610), (1510, 138088), (1640, 127142), (1684, 123820), (2105, 99056), (2416, 86305), (3020, 69044), (3280, 63571), (3368, 61910), (4210, 49528), (6040, 34522), (6191, 33680), (6736, 30955), (8420, 24764), (12080, 17261), (12382, 16840)]