21235770

素因数分解:

$2^1\times 3^7\times 5^1\times {\mathrm{971}}^1$

素因数の和:999

約数の個数: 64

約数和(自身を含む): 57386880

約数和(自身を除く): 36151110

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 135, 162, 243, 270, 405, 486, 729, 810, 971, 1215, 1458, 1942, 2187, 2430, 2913, 3645, 4374, 4855, 5826, 7290, 8739, 9710, 10935, 14565, 17478, 21870, 26217, 29130, 43695, 52434, 78651, 87390, 131085, 157302, 235953, 262170, 393255, 471906, 707859, 786510, 1179765, 1415718, 2123577, 2359530, 3539295, 4247154, 7078590, 10617885, 21235770]

約数ペア:

[(1, 21235770), (2, 10617885), (3, 7078590), (5, 4247154), (6, 3539295), (9, 2359530), (10, 2123577), (15, 1415718), (18, 1179765), (27, 786510), (30, 707859), (45, 471906), (54, 393255), (81, 262170), (90, 235953), (135, 157302), (162, 131085), (243, 87390), (270, 78651), (405, 52434), (486, 43695), (729, 29130), (810, 26217), (971, 21870), (1215, 17478), (1458, 14565), (1942, 10935), (2187, 9710), (2430, 8739), (2913, 7290), (3645, 5826), (4374, 4855)]