21905570

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{151}}^1\times {\mathrm{163}}^1$

素因数の和:410

約数の個数: 32

約数和(自身を含む): 40383360

約数和(自身を除く): 18477790

約数列:

[1, 2, 5, 10, 89, 151, 163, 178, 302, 326, 445, 755, 815, 890, 1510, 1630, 13439, 14507, 24613, 26878, 29014, 49226, 67195, 72535, 123065, 134390, 145070, 246130, 2190557, 4381114, 10952785, 21905570]

約数ペア:

[(1, 21905570), (2, 10952785), (5, 4381114), (10, 2190557), (89, 246130), (151, 145070), (163, 134390), (178, 123065), (302, 72535), (326, 67195), (445, 49226), (755, 29014), (815, 26878), (890, 24613), (1510, 14507), (1630, 13439)]