28309491

素因数分解:

$3^2\times 7^1\times {\mathrm{197}}^1\times {\mathrm{2281}}^1$

素因数の和:2491

約数の個数: 24

約数和(自身を含む): 46990944

約数和(自身を除く): 18681453

約数列:

[1, 3, 7, 9, 21, 63, 197, 591, 1379, 1773, 2281, 4137, 6843, 12411, 15967, 20529, 47901, 143703, 449357, 1348071, 3145499, 4044213, 9436497, 28309491]

約数ペア:

[(1, 28309491), (3, 9436497), (7, 4044213), (9, 3145499), (21, 1348071), (63, 449357), (197, 143703), (591, 47901), (1379, 20529), (1773, 15967), (2281, 12411), (4137, 6843)]