28920075

素因数分解:

$3^1\times 5^2\times {\mathrm{71}}^1\times {\mathrm{5431}}^1$

素因数の和:5515

約数の個数: 24

約数和(自身を含む): 48496896

約数和(自身を除く): 19576821

約数列:

[1, 3, 5, 15, 25, 71, 75, 213, 355, 1065, 1775, 5325, 5431, 16293, 27155, 81465, 135775, 385601, 407325, 1156803, 1928005, 5784015, 9640025, 28920075]

約数ペア:

[(1, 28920075), (3, 9640025), (5, 5784015), (15, 1928005), (25, 1156803), (71, 407325), (75, 385601), (213, 135775), (355, 81465), (1065, 27155), (1775, 16293), (5325, 5431)]