20797168

素因数分解:

$2^4\times 7^2\times {\mathrm{41}}^1\times {\mathrm{647}}^1$

素因数の和:710

約数の個数: 60

約数和(自身を含む): 48090672

約数和(自身を除く): 27293504

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 41, 49, 56, 82, 98, 112, 164, 196, 287, 328, 392, 574, 647, 656, 784, 1148, 1294, 2009, 2296, 2588, 4018, 4529, 4592, 5176, 8036, 9058, 10352, 16072, 18116, 26527, 31703, 32144, 36232, 53054, 63406, 72464, 106108, 126812, 185689, 212216, 253624, 371378, 424432, 507248, 742756, 1299823, 1485512, 2599646, 2971024, 5199292, 10398584, 20797168]

約数ペア:

[(1, 20797168), (2, 10398584), (4, 5199292), (7, 2971024), (8, 2599646), (14, 1485512), (16, 1299823), (28, 742756), (41, 507248), (49, 424432), (56, 371378), (82, 253624), (98, 212216), (112, 185689), (164, 126812), (196, 106108), (287, 72464), (328, 63406), (392, 53054), (574, 36232), (647, 32144), (656, 31703), (784, 26527), (1148, 18116), (1294, 16072), (2009, 10352), (2296, 9058), (2588, 8036), (4018, 5176), (4529, 4592)]