81509490

素因数分解:

$2^1\times 3^7\times 5^1\times {\mathrm{3727}}^1$

素因数の和:3755

約数の個数: 64

約数和(自身を含む): 220101120

約数和(自身を除く): 138591630

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 135, 162, 243, 270, 405, 486, 729, 810, 1215, 1458, 2187, 2430, 3645, 3727, 4374, 7290, 7454, 10935, 11181, 18635, 21870, 22362, 33543, 37270, 55905, 67086, 100629, 111810, 167715, 201258, 301887, 335430, 503145, 603774, 905661, 1006290, 1509435, 1811322, 2716983, 3018870, 4528305, 5433966, 8150949, 9056610, 13584915, 16301898, 27169830, 40754745, 81509490]

約数ペア:

[(1, 81509490), (2, 40754745), (3, 27169830), (5, 16301898), (6, 13584915), (9, 9056610), (10, 8150949), (15, 5433966), (18, 4528305), (27, 3018870), (30, 2716983), (45, 1811322), (54, 1509435), (81, 1006290), (90, 905661), (135, 603774), (162, 503145), (243, 335430), (270, 301887), (405, 201258), (486, 167715), (729, 111810), (810, 100629), (1215, 67086), (1458, 55905), (2187, 37270), (2430, 33543), (3645, 22362), (3727, 21870), (4374, 18635), (7290, 11181), (7454, 10935)]