21779555

素因数分解:

$5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{199}}^1$

素因数の和:323

約数の個数: 32

約数和(自身を含む): 31104000

約数和(自身を除く): 9324445

約数列:

[1, 5, 7, 35, 53, 59, 199, 265, 295, 371, 413, 995, 1393, 1855, 2065, 3127, 6965, 10547, 11741, 15635, 21889, 52735, 58705, 73829, 82187, 109445, 369145, 410935, 622273, 3111365, 4355911, 21779555]

約数ペア:

[(1, 21779555), (5, 4355911), (7, 3111365), (35, 622273), (53, 410935), (59, 369145), (199, 109445), (265, 82187), (295, 73829), (371, 58705), (413, 52735), (995, 21889), (1393, 15635), (1855, 11741), (2065, 10547), (3127, 6965)]