21884005

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{241}}^1$

素因数の和:397

約数の個数: 32

約数和(自身を含む): 31223808

約数和(自身を除く): 9339803

約数列:

[1, 5, 11, 13, 55, 65, 127, 143, 241, 635, 715, 1205, 1397, 1651, 2651, 3133, 6985, 8255, 13255, 15665, 18161, 30607, 34463, 90805, 153035, 172315, 336677, 397891, 1683385, 1989455, 4376801, 21884005]

約数ペア:

[(1, 21884005), (5, 4376801), (11, 1989455), (13, 1683385), (55, 397891), (65, 336677), (127, 172315), (143, 153035), (241, 90805), (635, 34463), (715, 30607), (1205, 18161), (1397, 15665), (1651, 13255), (2651, 8255), (3133, 6985)]