21312620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1$

素因数の和:183

約数の個数: 96

約数和(自身を含む): 54190080

約数和(自身を除く): 32877460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 47, 70, 79, 82, 94, 140, 158, 164, 188, 205, 235, 287, 316, 329, 395, 410, 470, 553, 574, 658, 790, 820, 940, 1106, 1148, 1316, 1435, 1580, 1645, 1927, 2212, 2765, 2870, 3239, 3290, 3713, 3854, 5530, 5740, 6478, 6580, 7426, 7708, 9635, 11060, 12956, 13489, 14852, 16195, 18565, 19270, 22673, 25991, 26978, 32390, 37130, 38540, 45346, 51982, 53956, 64780, 67445, 74260, 90692, 103964, 113365, 129955, 134890, 152233, 226730, 259910, 269780, 304466, 453460, 519820, 608932, 761165, 1065631, 1522330, 2131262, 3044660, 4262524, 5328155, 10656310, 21312620]

約数ペア:

[(1, 21312620), (2, 10656310), (4, 5328155), (5, 4262524), (7, 3044660), (10, 2131262), (14, 1522330), (20, 1065631), (28, 761165), (35, 608932), (41, 519820), (47, 453460), (70, 304466), (79, 269780), (82, 259910), (94, 226730), (140, 152233), (158, 134890), (164, 129955), (188, 113365), (205, 103964), (235, 90692), (287, 74260), (316, 67445), (329, 64780), (395, 53956), (410, 51982), (470, 45346), (553, 38540), (574, 37130), (658, 32390), (790, 26978), (820, 25991), (940, 22673), (1106, 19270), (1148, 18565), (1316, 16195), (1435, 14852), (1580, 13489), (1645, 12956), (1927, 11060), (2212, 9635), (2765, 7708), (2870, 7426), (3239, 6580), (3290, 6478), (3713, 5740), (3854, 5530)]