20464731

素因数分解:

$3^5\times 7^1\times {\mathrm{53}}^1\times {\mathrm{227}}^1$

素因数の和:302

約数の個数: 48

約数和(自身を含む): 35852544

約数和(自身を除く): 15387813

約数列:

[1, 3, 7, 9, 21, 27, 53, 63, 81, 159, 189, 227, 243, 371, 477, 567, 681, 1113, 1431, 1589, 1701, 2043, 3339, 4293, 4767, 6129, 10017, 12031, 12879, 14301, 18387, 30051, 36093, 42903, 55161, 84217, 90153, 108279, 128709, 252651, 324837, 386127, 757953, 974511, 2273859, 2923533, 6821577, 20464731]

約数ペア:

[(1, 20464731), (3, 6821577), (7, 2923533), (9, 2273859), (21, 974511), (27, 757953), (53, 386127), (63, 324837), (81, 252651), (159, 128709), (189, 108279), (227, 90153), (243, 84217), (371, 55161), (477, 42903), (567, 36093), (681, 30051), (1113, 18387), (1431, 14301), (1589, 12879), (1701, 12031), (2043, 10017), (3339, 6129), (4293, 4767)]