20638772

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{593}}^1$

素因数の和:728

約数の個数: 48

約数和(自身を含む): 45505152

約数和(自身を除く): 24866380

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 113, 154, 226, 308, 452, 593, 791, 1186, 1243, 1582, 2372, 2486, 3164, 4151, 4972, 6523, 8302, 8701, 13046, 16604, 17402, 26092, 34804, 45661, 67009, 91322, 134018, 182644, 268036, 469063, 737099, 938126, 1474198, 1876252, 2948396, 5159693, 10319386, 20638772]

約数ペア:

[(1, 20638772), (2, 10319386), (4, 5159693), (7, 2948396), (11, 1876252), (14, 1474198), (22, 938126), (28, 737099), (44, 469063), (77, 268036), (113, 182644), (154, 134018), (226, 91322), (308, 67009), (452, 45661), (593, 34804), (791, 26092), (1186, 17402), (1243, 16604), (1582, 13046), (2372, 8701), (2486, 8302), (3164, 6523), (4151, 4972)]