21250908

素因数分解:

$2^2\times 3^2\times 7^3\times {\mathrm{1721}}^1$

素因数の和:1752

約数の個数: 72

約数和(自身を含む): 62680800

約数和(自身を除く): 41429892

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 49, 63, 84, 98, 126, 147, 196, 252, 294, 343, 441, 588, 686, 882, 1029, 1372, 1721, 1764, 2058, 3087, 3442, 4116, 5163, 6174, 6884, 10326, 12047, 12348, 15489, 20652, 24094, 30978, 36141, 48188, 61956, 72282, 84329, 108423, 144564, 168658, 216846, 252987, 337316, 433692, 505974, 590303, 758961, 1011948, 1180606, 1517922, 1770909, 2361212, 3035844, 3541818, 5312727, 7083636, 10625454, 21250908]

約数ペア:

[(1, 21250908), (2, 10625454), (3, 7083636), (4, 5312727), (6, 3541818), (7, 3035844), (9, 2361212), (12, 1770909), (14, 1517922), (18, 1180606), (21, 1011948), (28, 758961), (36, 590303), (42, 505974), (49, 433692), (63, 337316), (84, 252987), (98, 216846), (126, 168658), (147, 144564), (196, 108423), (252, 84329), (294, 72282), (343, 61956), (441, 48188), (588, 36141), (686, 30978), (882, 24094), (1029, 20652), (1372, 15489), (1721, 12348), (1764, 12047), (2058, 10326), (3087, 6884), (3442, 6174), (4116, 5163)]