28263609

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{4021}}^1$

素因数の和:4109

約数の個数: 24

約数和(自身を含む): 45175104

約数和(自身を除く): 16911495

約数列:

[1, 3, 9, 11, 33, 71, 99, 213, 639, 781, 2343, 4021, 7029, 12063, 36189, 44231, 132693, 285491, 398079, 856473, 2569419, 3140401, 9421203, 28263609]

約数ペア:

[(1, 28263609), (3, 9421203), (9, 3140401), (11, 2569419), (33, 856473), (71, 398079), (99, 285491), (213, 132693), (639, 44231), (781, 36189), (2343, 12063), (4021, 7029)]