20925928

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{137}}^1\times {\mathrm{313}}^1$

素因数の和:517

約数の個数: 32

約数和(自身を含む): 40298760

約数和(自身を除く): 19372832

約数列:

[1, 2, 4, 8, 61, 122, 137, 244, 274, 313, 488, 548, 626, 1096, 1252, 2504, 8357, 16714, 19093, 33428, 38186, 42881, 66856, 76372, 85762, 152744, 171524, 343048, 2615741, 5231482, 10462964, 20925928]

約数ペア:

[(1, 20925928), (2, 10462964), (4, 5231482), (8, 2615741), (61, 343048), (122, 171524), (137, 152744), (244, 85762), (274, 76372), (313, 66856), (488, 42881), (548, 38186), (626, 33428), (1096, 19093), (1252, 16714), (2504, 8357)]