21260685

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{569}}^1$

素因数の和:677

約数の個数: 32

約数和(自身を含む): 35458560

約数和(自身を除く): 14197875

約数列:

[1, 3, 5, 15, 47, 53, 141, 159, 235, 265, 569, 705, 795, 1707, 2491, 2845, 7473, 8535, 12455, 26743, 30157, 37365, 80229, 90471, 133715, 150785, 401145, 452355, 1417379, 4252137, 7086895, 21260685]

約数ペア:

[(1, 21260685), (3, 7086895), (5, 4252137), (15, 1417379), (47, 452355), (53, 401145), (141, 150785), (159, 133715), (235, 90471), (265, 80229), (569, 37365), (705, 30157), (795, 26743), (1707, 12455), (2491, 8535), (2845, 7473)]