20129512

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{167}}^1$

素因数の和:266

約数の個数: 64

約数和(自身を含む): 43747200

約数和(自身を除く): 23617688

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 52, 61, 76, 104, 122, 152, 167, 244, 247, 334, 488, 494, 668, 793, 988, 1159, 1336, 1586, 1976, 2171, 2318, 3172, 3173, 4342, 4636, 6344, 6346, 8684, 9272, 10187, 12692, 15067, 17368, 20374, 25384, 30134, 40748, 41249, 60268, 81496, 82498, 120536, 132431, 164996, 193553, 264862, 329992, 387106, 529724, 774212, 1059448, 1548424, 2516189, 5032378, 10064756, 20129512]

約数ペア:

[(1, 20129512), (2, 10064756), (4, 5032378), (8, 2516189), (13, 1548424), (19, 1059448), (26, 774212), (38, 529724), (52, 387106), (61, 329992), (76, 264862), (104, 193553), (122, 164996), (152, 132431), (167, 120536), (244, 82498), (247, 81496), (334, 60268), (488, 41249), (494, 40748), (668, 30134), (793, 25384), (988, 20374), (1159, 17368), (1336, 15067), (1586, 12692), (1976, 10187), (2171, 9272), (2318, 8684), (3172, 6346), (3173, 6344), (4342, 4636)]