21905640

素因数分解:

$2^3\times 3^4\times 5^1\times {\mathrm{6761}}^1$

素因数の和:6784

約数の個数: 80

約数和(自身を含む): 73638180

約数和(自身を除く): 51732540

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 81, 90, 108, 120, 135, 162, 180, 216, 270, 324, 360, 405, 540, 648, 810, 1080, 1620, 3240, 6761, 13522, 20283, 27044, 33805, 40566, 54088, 60849, 67610, 81132, 101415, 121698, 135220, 162264, 182547, 202830, 243396, 270440, 304245, 365094, 405660, 486792, 547641, 608490, 730188, 811320, 912735, 1095282, 1216980, 1460376, 1825470, 2190564, 2433960, 2738205, 3650940, 4381128, 5476410, 7301880, 10952820, 21905640]

約数ペア:

[(1, 21905640), (2, 10952820), (3, 7301880), (4, 5476410), (5, 4381128), (6, 3650940), (8, 2738205), (9, 2433960), (10, 2190564), (12, 1825470), (15, 1460376), (18, 1216980), (20, 1095282), (24, 912735), (27, 811320), (30, 730188), (36, 608490), (40, 547641), (45, 486792), (54, 405660), (60, 365094), (72, 304245), (81, 270440), (90, 243396), (108, 202830), (120, 182547), (135, 162264), (162, 135220), (180, 121698), (216, 101415), (270, 81132), (324, 67610), (360, 60849), (405, 54088), (540, 40566), (648, 33805), (810, 27044), (1080, 20283), (1620, 13522), (3240, 6761)]