28742775

素因数分解:

$3^1\times 5^2\times {\mathrm{157}}^1\times {\mathrm{2441}}^1$

素因数の和:2611

約数の個数: 24

約数和(自身を含む): 47843664

約数和(自身を除く): 19100889

約数列:

[1, 3, 5, 15, 25, 75, 157, 471, 785, 2355, 2441, 3925, 7323, 11775, 12205, 36615, 61025, 183075, 383237, 1149711, 1916185, 5748555, 9580925, 28742775]

約数ペア:

[(1, 28742775), (3, 9580925), (5, 5748555), (15, 1916185), (25, 1149711), (75, 383237), (157, 183075), (471, 61025), (785, 36615), (2355, 12205), (2441, 11775), (3925, 7323)]