21298810

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{8623}}^1$

素因数の和:8662

約数の個数: 32

約数和(自身を含む): 43464960

約数和(自身を除く): 22166150

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 95, 130, 190, 247, 494, 1235, 2470, 8623, 17246, 43115, 86230, 112099, 163837, 224198, 327674, 560495, 819185, 1120990, 1638370, 2129881, 4259762, 10649405, 21298810]

約数ペア:

[(1, 21298810), (2, 10649405), (5, 4259762), (10, 2129881), (13, 1638370), (19, 1120990), (26, 819185), (38, 560495), (65, 327674), (95, 224198), (130, 163837), (190, 112099), (247, 86230), (494, 43115), (1235, 17246), (2470, 8623)]