20785416

素因数分解:

$2^3\times 3^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{263}}^1$

素因数の和:398

約数の個数: 64

約数和(自身を含む): 54172800

約数和(自身を除く): 33387384

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 37, 74, 89, 111, 148, 178, 222, 263, 267, 296, 356, 444, 526, 534, 712, 789, 888, 1052, 1068, 1578, 2104, 2136, 3156, 3293, 6312, 6586, 9731, 9879, 13172, 19462, 19758, 23407, 26344, 29193, 38924, 39516, 46814, 58386, 70221, 77848, 79032, 93628, 116772, 140442, 187256, 233544, 280884, 561768, 866059, 1732118, 2598177, 3464236, 5196354, 6928472, 10392708, 20785416]

約数ペア:

[(1, 20785416), (2, 10392708), (3, 6928472), (4, 5196354), (6, 3464236), (8, 2598177), (12, 1732118), (24, 866059), (37, 561768), (74, 280884), (89, 233544), (111, 187256), (148, 140442), (178, 116772), (222, 93628), (263, 79032), (267, 77848), (296, 70221), (356, 58386), (444, 46814), (526, 39516), (534, 38924), (712, 29193), (789, 26344), (888, 23407), (1052, 19758), (1068, 19462), (1578, 13172), (2104, 9879), (2136, 9731), (3156, 6586), (3293, 6312)]