20309240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{72533}}^1$

素因数の和:72551

約数の個数: 32

約数和(自身を含む): 52224480

約数和(自身を除く): 31915240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 72533, 145066, 290132, 362665, 507731, 580264, 725330, 1015462, 1450660, 2030924, 2538655, 2901320, 4061848, 5077310, 10154620, 20309240]

約数ペア:

[(1, 20309240), (2, 10154620), (4, 5077310), (5, 4061848), (7, 2901320), (8, 2538655), (10, 2030924), (14, 1450660), (20, 1015462), (28, 725330), (35, 580264), (40, 507731), (56, 362665), (70, 290132), (140, 145066), (280, 72533)]