21787497325

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{277}}^1\times {\mathrm{286019}}^1$

素因数の和:286317

約数の個数: 24

約数和(自身を含む): 29579044320

約数和(自身を除く): 7791546995

約数列:

[1, 5, 11, 25, 55, 275, 277, 1385, 3047, 6925, 15235, 76175, 286019, 1430095, 3146209, 7150475, 15731045, 78655225, 79227263, 396136315, 871499893, 1980681575, 4357499465, 21787497325]

約数ペア:

[(1, 21787497325), (5, 4357499465), (11, 1980681575), (25, 871499893), (55, 396136315), (275, 79227263), (277, 78655225), (1385, 15731045), (3047, 7150475), (6925, 3146209), (15235, 1430095), (76175, 286019)]