31857225

素因数分解:

$3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{151}}^1$

素因数の和:290

約数の個数: 48

約数和(自身を含む): 55413120

約数和(自身を除く): 23555895

約数列:

[1, 3, 5, 15, 25, 29, 75, 87, 97, 145, 151, 291, 435, 453, 485, 725, 755, 1455, 2175, 2265, 2425, 2813, 3775, 4379, 7275, 8439, 11325, 13137, 14065, 14647, 21895, 42195, 43941, 65685, 70325, 73235, 109475, 210975, 219705, 328425, 366175, 424763, 1098525, 1274289, 2123815, 6371445, 10619075, 31857225]

約数ペア:

[(1, 31857225), (3, 10619075), (5, 6371445), (15, 2123815), (25, 1274289), (29, 1098525), (75, 424763), (87, 366175), (97, 328425), (145, 219705), (151, 210975), (291, 109475), (435, 73235), (453, 70325), (485, 65685), (725, 43941), (755, 42195), (1455, 21895), (2175, 14647), (2265, 14065), (2425, 13137), (2813, 11325), (3775, 8439), (4379, 7275)]