201640820

素因数分解:

$2^2\times 5^1\times {\mathrm{659}}^1\times {\mathrm{15299}}^1$

素因数の和:15967

約数の個数: 24

約数和(自身を含む): 424116000

約数和(自身を除く): 222475180

約数列:

[1, 2, 4, 5, 10, 20, 659, 1318, 2636, 3295, 6590, 13180, 15299, 30598, 61196, 76495, 152990, 305980, 10082041, 20164082, 40328164, 50410205, 100820410, 201640820]

約数ペア:

[(1, 201640820), (2, 100820410), (4, 50410205), (5, 40328164), (10, 20164082), (20, 10082041), (659, 305980), (1318, 152990), (2636, 76495), (3295, 61196), (6590, 30598), (13180, 15299)]