201528985

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{281}}^1\times {\mathrm{661}}^1$

素因数の和:985

約数の個数: 32

約数和(自身を含む): 286746624

約数和(自身を除く): 85217639

約数列:

[1, 5, 7, 31, 35, 155, 217, 281, 661, 1085, 1405, 1967, 3305, 4627, 8711, 9835, 20491, 23135, 43555, 60977, 102455, 143437, 185741, 304885, 717185, 928705, 1300187, 5757971, 6500935, 28789855, 40305797, 201528985]

約数ペア:

[(1, 201528985), (5, 40305797), (7, 28789855), (31, 6500935), (35, 5757971), (155, 1300187), (217, 928705), (281, 717185), (661, 304885), (1085, 185741), (1405, 143437), (1967, 102455), (3305, 60977), (4627, 43555), (8711, 23135), (9835, 20491)]