20372885

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{179}}^1$

素因数の和:317

約数の個数: 32

約数和(自身を含む): 28304640

約数和(自身を除く): 7931755

約数列:

[1, 5, 13, 17, 65, 85, 103, 179, 221, 515, 895, 1105, 1339, 1751, 2327, 3043, 6695, 8755, 11635, 15215, 18437, 22763, 39559, 92185, 113815, 197795, 239681, 313429, 1198405, 1567145, 4074577, 20372885]

約数ペア:

[(1, 20372885), (5, 4074577), (13, 1567145), (17, 1198405), (65, 313429), (85, 239681), (103, 197795), (179, 113815), (221, 92185), (515, 39559), (895, 22763), (1105, 18437), (1339, 15215), (1751, 11635), (2327, 8755), (3043, 6695)]