208297640

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{77723}}^1$

素因数の和:77801

約数の個数: 32

約数和(自身を含む): 475670880

約数和(自身を除く): 267373240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 335, 536, 670, 1340, 2680, 77723, 155446, 310892, 388615, 621784, 777230, 1554460, 3108920, 5207441, 10414882, 20829764, 26037205, 41659528, 52074410, 104148820, 208297640]

約数ペア:

[(1, 208297640), (2, 104148820), (4, 52074410), (5, 41659528), (8, 26037205), (10, 20829764), (20, 10414882), (40, 5207441), (67, 3108920), (134, 1554460), (268, 777230), (335, 621784), (536, 388615), (670, 310892), (1340, 155446), (2680, 77723)]