31780215

素因数分解:

$3^3\times 5^1\times {\mathrm{151}}^1\times {\mathrm{1559}}^1$

素因数の和:1724

約数の個数: 32

約数和(自身を含む): 56908800

約数和(自身を除く): 25128585

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 151, 453, 755, 1359, 1559, 2265, 4077, 4677, 6795, 7795, 14031, 20385, 23385, 42093, 70155, 210465, 235409, 706227, 1177045, 2118681, 3531135, 6356043, 10593405, 31780215]

約数ペア:

[(1, 31780215), (3, 10593405), (5, 6356043), (9, 3531135), (15, 2118681), (27, 1177045), (45, 706227), (135, 235409), (151, 210465), (453, 70155), (755, 42093), (1359, 23385), (1559, 20385), (2265, 14031), (4077, 7795), (4677, 6795)]