20903015

素因数分解:

$5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1\times {\mathrm{131}}^1$

素因数の和:287

約数の個数: 32

約数和(自身を含む): 29804544

約数和(自身を除く): 8901529

約数列:

[1, 5, 7, 35, 47, 97, 131, 235, 329, 485, 655, 679, 917, 1645, 3395, 4559, 4585, 6157, 12707, 22795, 30785, 31913, 43099, 63535, 88949, 159565, 215495, 444745, 597229, 2986145, 4180603, 20903015]

約数ペア:

[(1, 20903015), (5, 4180603), (7, 2986145), (35, 597229), (47, 444745), (97, 215495), (131, 159565), (235, 88949), (329, 63535), (485, 43099), (655, 31913), (679, 30785), (917, 22795), (1645, 12707), (3395, 6157), (4559, 4585)]