21675665

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{12713}}^1$

素因数の和:12760

約数の個数: 16

約数和(自身を含む): 29293056

約数和(自身を除く): 7617391

約数列:

[1, 5, 11, 31, 55, 155, 341, 1705, 12713, 63565, 139843, 394103, 699215, 1970515, 4335133, 21675665]

約数ペア:

[(1, 21675665), (5, 4335133), (11, 1970515), (31, 699215), (55, 394103), (155, 139843), (341, 63565), (1705, 12713)]