20691480

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{269}}^1\times {\mathrm{641}}^1$

素因数の和:924

約数の個数: 64

約数和(自身を含む): 62402400

約数和(自身を除く): 41710920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 269, 538, 641, 807, 1076, 1282, 1345, 1614, 1923, 2152, 2564, 2690, 3205, 3228, 3846, 4035, 5128, 5380, 6410, 6456, 7692, 8070, 9615, 10760, 12820, 15384, 16140, 19230, 25640, 32280, 38460, 76920, 172429, 344858, 517287, 689716, 862145, 1034574, 1379432, 1724290, 2069148, 2586435, 3448580, 4138296, 5172870, 6897160, 10345740, 20691480]

約数ペア:

[(1, 20691480), (2, 10345740), (3, 6897160), (4, 5172870), (5, 4138296), (6, 3448580), (8, 2586435), (10, 2069148), (12, 1724290), (15, 1379432), (20, 1034574), (24, 862145), (30, 689716), (40, 517287), (60, 344858), (120, 172429), (269, 76920), (538, 38460), (641, 32280), (807, 25640), (1076, 19230), (1282, 16140), (1345, 15384), (1614, 12820), (1923, 10760), (2152, 9615), (2564, 8070), (2690, 7692), (3205, 6456), (3228, 6410), (3846, 5380), (4035, 5128)]