28375029

素因数分解:

$3^4\times {\mathrm{137}}^1\times {\mathrm{2557}}^1$

素因数の和:2706

約数の個数: 20

約数和(自身を含む): 42713484

約数和(自身を除く): 14338455

約数列:

[1, 3, 9, 27, 81, 137, 411, 1233, 2557, 3699, 7671, 11097, 23013, 69039, 207117, 350309, 1050927, 3152781, 9458343, 28375029]

約数ペア:

[(1, 28375029), (3, 9458343), (9, 3152781), (27, 1050927), (81, 350309), (137, 207117), (411, 69039), (1233, 23013), (2557, 11097), (3699, 7671)]