21421155

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{6581}}^1$

素因数の和:6627

約数の個数: 32

約数和(自身を含む): 40439808

約数和(自身を除く): 19018653

約数列:

[1, 3, 5, 7, 15, 21, 31, 35, 93, 105, 155, 217, 465, 651, 1085, 3255, 6581, 19743, 32905, 46067, 98715, 138201, 204011, 230335, 612033, 691005, 1020055, 1428077, 3060165, 4284231, 7140385, 21421155]

約数ペア:

[(1, 21421155), (3, 7140385), (5, 4284231), (7, 3060165), (15, 1428077), (21, 1020055), (31, 691005), (35, 612033), (93, 230335), (105, 204011), (155, 138201), (217, 98715), (465, 46067), (651, 32905), (1085, 19743), (3255, 6581)]