21870828

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{1471}}^1$

素因数の和:1547

約数の個数: 72

約数和(自身を含む): 64296960

約数和(自身を除く): 42426132

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 59, 63, 84, 118, 126, 177, 236, 252, 354, 413, 531, 708, 826, 1062, 1239, 1471, 1652, 2124, 2478, 2942, 3717, 4413, 4956, 5884, 7434, 8826, 10297, 13239, 14868, 17652, 20594, 26478, 30891, 41188, 52956, 61782, 86789, 92673, 123564, 173578, 185346, 260367, 347156, 370692, 520734, 607523, 781101, 1041468, 1215046, 1562202, 1822569, 2430092, 3124404, 3645138, 5467707, 7290276, 10935414, 21870828]

約数ペア:

[(1, 21870828), (2, 10935414), (3, 7290276), (4, 5467707), (6, 3645138), (7, 3124404), (9, 2430092), (12, 1822569), (14, 1562202), (18, 1215046), (21, 1041468), (28, 781101), (36, 607523), (42, 520734), (59, 370692), (63, 347156), (84, 260367), (118, 185346), (126, 173578), (177, 123564), (236, 92673), (252, 86789), (354, 61782), (413, 52956), (531, 41188), (708, 30891), (826, 26478), (1062, 20594), (1239, 17652), (1471, 14868), (1652, 13239), (2124, 10297), (2478, 8826), (2942, 7434), (3717, 5884), (4413, 4956)]