87903739

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{191}}^1$

素因数の和:391

約数の個数: 32

約数和(自身を含む): 113541120

約数和(自身を除く): 25637381

約数列:

[1, 7, 11, 43, 77, 139, 191, 301, 473, 973, 1337, 1529, 2101, 3311, 5977, 8213, 10703, 14707, 26549, 41839, 57491, 65747, 90343, 185843, 292039, 460229, 632401, 1141607, 2044273, 7991249, 12557677, 87903739]

約数ペア:

[(1, 87903739), (7, 12557677), (11, 7991249), (43, 2044273), (77, 1141607), (139, 632401), (191, 460229), (301, 292039), (473, 185843), (973, 90343), (1337, 65747), (1529, 57491), (2101, 41839), (3311, 26549), (5977, 14707), (8213, 10703)]