18867996880

素因数分解:

$2^4\times 5^1\times {\mathrm{6781}}^1\times {\mathrm{34781}}^1$

素因数の和:41575

約数の個数: 40

約数和(自身を含む): 43875823464

約数和(自身を除く): 25007826584

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 6781, 13562, 27124, 33905, 34781, 54248, 67810, 69562, 108496, 135620, 139124, 173905, 271240, 278248, 347810, 542480, 556496, 695620, 1391240, 2782480, 235849961, 471699922, 943399844, 1179249805, 1886799688, 2358499610, 3773599376, 4716999220, 9433998440, 18867996880]

約数ペア:

[(1, 18867996880), (2, 9433998440), (4, 4716999220), (5, 3773599376), (8, 2358499610), (10, 1886799688), (16, 1179249805), (20, 943399844), (40, 471699922), (80, 235849961), (6781, 2782480), (13562, 1391240), (27124, 695620), (33905, 556496), (34781, 542480), (54248, 347810), (67810, 278248), (69562, 271240), (108496, 173905), (135620, 139124)]