21094975

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{971}}^1$

素因数の和:1071

約数の個数: 24

約数和(自身を含む): 28926720

約数和(自身を除く): 7831745

約数列:

[1, 5, 11, 25, 55, 79, 275, 395, 869, 971, 1975, 4345, 4855, 10681, 21725, 24275, 53405, 76709, 267025, 383545, 843799, 1917725, 4218995, 21094975]

約数ペア:

[(1, 21094975), (5, 4218995), (11, 1917725), (25, 843799), (55, 383545), (79, 267025), (275, 76709), (395, 53405), (869, 24275), (971, 21725), (1975, 10681), (4345, 4855)]