21155580

素因数分解:

$2^2\times 3^6\times 5^1\times {\mathrm{1451}}^1$

素因数の和:1478

約数の個数: 84

約数和(自身を含む): 66655512

約数和(自身を除く): 45499932

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 243, 270, 324, 405, 486, 540, 729, 810, 972, 1215, 1451, 1458, 1620, 2430, 2902, 2916, 3645, 4353, 4860, 5804, 7255, 7290, 8706, 13059, 14510, 14580, 17412, 21765, 26118, 29020, 39177, 43530, 52236, 65295, 78354, 87060, 117531, 130590, 156708, 195885, 235062, 261180, 352593, 391770, 470124, 587655, 705186, 783540, 1057779, 1175310, 1410372, 1762965, 2115558, 2350620, 3525930, 4231116, 5288895, 7051860, 10577790, 21155580]

約数ペア:

[(1, 21155580), (2, 10577790), (3, 7051860), (4, 5288895), (5, 4231116), (6, 3525930), (9, 2350620), (10, 2115558), (12, 1762965), (15, 1410372), (18, 1175310), (20, 1057779), (27, 783540), (30, 705186), (36, 587655), (45, 470124), (54, 391770), (60, 352593), (81, 261180), (90, 235062), (108, 195885), (135, 156708), (162, 130590), (180, 117531), (243, 87060), (270, 78354), (324, 65295), (405, 52236), (486, 43530), (540, 39177), (729, 29020), (810, 26118), (972, 21765), (1215, 17412), (1451, 14580), (1458, 14510), (1620, 13059), (2430, 8706), (2902, 7290), (2916, 7255), (3645, 5804), (4353, 4860)]