20972140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{2539}}^1$

素因数の和:2614

約数の個数: 48

約数和(自身を含む): 51206400

約数和(自身を除く): 30234260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 59, 70, 118, 140, 236, 295, 413, 590, 826, 1180, 1652, 2065, 2539, 4130, 5078, 8260, 10156, 12695, 17773, 25390, 35546, 50780, 71092, 88865, 149801, 177730, 299602, 355460, 599204, 749005, 1048607, 1498010, 2097214, 2996020, 4194428, 5243035, 10486070, 20972140]

約数ペア:

[(1, 20972140), (2, 10486070), (4, 5243035), (5, 4194428), (7, 2996020), (10, 2097214), (14, 1498010), (20, 1048607), (28, 749005), (35, 599204), (59, 355460), (70, 299602), (118, 177730), (140, 149801), (236, 88865), (295, 71092), (413, 50780), (590, 35546), (826, 25390), (1180, 17773), (1652, 12695), (2065, 10156), (2539, 8260), (4130, 5078)]