21370976

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{557}}^1$

素因数の和:687

約数の個数: 48

約数和(自身を含む): 46403280

約数和(自身を除く): 25032304

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 88, 109, 176, 218, 352, 436, 557, 872, 1114, 1199, 1744, 2228, 2398, 3488, 4456, 4796, 6127, 8912, 9592, 12254, 17824, 19184, 24508, 38368, 49016, 60713, 98032, 121426, 196064, 242852, 485704, 667843, 971408, 1335686, 1942816, 2671372, 5342744, 10685488, 21370976]

約数ペア:

[(1, 21370976), (2, 10685488), (4, 5342744), (8, 2671372), (11, 1942816), (16, 1335686), (22, 971408), (32, 667843), (44, 485704), (88, 242852), (109, 196064), (176, 121426), (218, 98032), (352, 60713), (436, 49016), (557, 38368), (872, 24508), (1114, 19184), (1199, 17824), (1744, 12254), (2228, 9592), (2398, 8912), (3488, 6127), (4456, 4796)]