20459215

素因数分解:

$5^1\times 7^2\times {\mathrm{113}}^1\times {\mathrm{739}}^1$

素因数の和:871

約数の個数: 24

約数和(自身を含む): 28851120

約数和(自身を除く): 8391905

約数列:

[1, 5, 7, 35, 49, 113, 245, 565, 739, 791, 3695, 3955, 5173, 5537, 25865, 27685, 36211, 83507, 181055, 417535, 584549, 2922745, 4091843, 20459215]

約数ペア:

[(1, 20459215), (5, 4091843), (7, 2922745), (35, 584549), (49, 417535), (113, 181055), (245, 83507), (565, 36211), (739, 27685), (791, 25865), (3695, 5537), (3955, 5173)]