21167445

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{1487}}^1$

素因数の和:1581

約数の個数: 32

約数和(自身を含む): 36997632

約数和(自身を除く): 15830187

約数列:

[1, 3, 5, 13, 15, 39, 65, 73, 195, 219, 365, 949, 1095, 1487, 2847, 4461, 4745, 7435, 14235, 19331, 22305, 57993, 96655, 108551, 289965, 325653, 542755, 1411163, 1628265, 4233489, 7055815, 21167445]

約数ペア:

[(1, 21167445), (3, 7055815), (5, 4233489), (13, 1628265), (15, 1411163), (39, 542755), (65, 325653), (73, 289965), (195, 108551), (219, 96655), (365, 57993), (949, 22305), (1095, 19331), (1487, 14235), (2847, 7435), (4461, 4745)]