20439355

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{97}}^1$

素因数の和:223

約数の個数: 32

約数和(自身を含む): 27349056

約数和(自身を除く): 6909701

約数列:

[1, 5, 17, 37, 67, 85, 97, 185, 335, 485, 629, 1139, 1649, 2479, 3145, 3589, 5695, 6499, 8245, 12395, 17945, 32495, 42143, 61013, 110483, 210715, 240463, 305065, 552415, 1202315, 4087871, 20439355]

約数ペア:

[(1, 20439355), (5, 4087871), (17, 1202315), (37, 552415), (67, 305065), (85, 240463), (97, 210715), (185, 110483), (335, 61013), (485, 42143), (629, 32495), (1139, 17945), (1649, 12395), (2479, 8245), (3145, 6499), (3589, 5695)]