21088965

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{647}}^1$

素因数の和:749

約数の個数: 32

約数和(自身を含む): 35271936

約数和(自身を除く): 14182971

約数列:

[1, 3, 5, 15, 41, 53, 123, 159, 205, 265, 615, 647, 795, 1941, 2173, 3235, 6519, 9705, 10865, 26527, 32595, 34291, 79581, 102873, 132635, 171455, 397905, 514365, 1405931, 4217793, 7029655, 21088965]

約数ペア:

[(1, 21088965), (3, 7029655), (5, 4217793), (15, 1405931), (41, 514365), (53, 397905), (123, 171455), (159, 132635), (205, 102873), (265, 79581), (615, 34291), (647, 32595), (795, 26527), (1941, 10865), (2173, 9705), (3235, 6519)]