520080405

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{156887}}^1$

素因数の和:156925

約数の個数: 32

約数和(自身を含む): 948858624

約数和(自身を除く): 428778219

約数列:

[1, 3, 5, 13, 15, 17, 39, 51, 65, 85, 195, 221, 255, 663, 1105, 3315, 156887, 470661, 784435, 2039531, 2353305, 2667079, 6118593, 8001237, 10197655, 13335395, 30592965, 34672027, 40006185, 104016081, 173360135, 520080405]

約数ペア:

[(1, 520080405), (3, 173360135), (5, 104016081), (13, 40006185), (15, 34672027), (17, 30592965), (39, 13335395), (51, 10197655), (65, 8001237), (85, 6118593), (195, 2667079), (221, 2353305), (255, 2039531), (663, 784435), (1105, 470661), (3315, 156887)]