20664768

素因数分解:

$2^6\times 3^1\times {\mathrm{43}}^1\times {\mathrm{2503}}^1$

素因数の和:2561

約数の個数: 56

約数和(自身を含む): 55969408

約数和(自身を除く): 35304640

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 43, 48, 64, 86, 96, 129, 172, 192, 258, 344, 516, 688, 1032, 1376, 2064, 2503, 2752, 4128, 5006, 7509, 8256, 10012, 15018, 20024, 30036, 40048, 60072, 80096, 107629, 120144, 160192, 215258, 240288, 322887, 430516, 480576, 645774, 861032, 1291548, 1722064, 2583096, 3444128, 5166192, 6888256, 10332384, 20664768]

約数ペア:

[(1, 20664768), (2, 10332384), (3, 6888256), (4, 5166192), (6, 3444128), (8, 2583096), (12, 1722064), (16, 1291548), (24, 861032), (32, 645774), (43, 480576), (48, 430516), (64, 322887), (86, 240288), (96, 215258), (129, 160192), (172, 120144), (192, 107629), (258, 80096), (344, 60072), (516, 40048), (688, 30036), (1032, 20024), (1376, 15018), (2064, 10012), (2503, 8256), (2752, 7509), (4128, 5006)]