243705640

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{181}}^1\times {\mathrm{821}}^1$

素因数の和:1054

約数の個数: 64

約数和(自身を含む): 565503120

約数和(自身を除く): 321797480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 181, 205, 328, 362, 410, 724, 820, 821, 905, 1448, 1640, 1642, 1810, 3284, 3620, 4105, 6568, 7240, 7421, 8210, 14842, 16420, 29684, 32840, 33661, 37105, 59368, 67322, 74210, 134644, 148420, 148601, 168305, 269288, 296840, 297202, 336610, 594404, 673220, 743005, 1188808, 1346440, 1486010, 2972020, 5944040, 6092641, 12185282, 24370564, 30463205, 48741128, 60926410, 121852820, 243705640]

約数ペア:

[(1, 243705640), (2, 121852820), (4, 60926410), (5, 48741128), (8, 30463205), (10, 24370564), (20, 12185282), (40, 6092641), (41, 5944040), (82, 2972020), (164, 1486010), (181, 1346440), (205, 1188808), (328, 743005), (362, 673220), (410, 594404), (724, 336610), (820, 297202), (821, 296840), (905, 269288), (1448, 168305), (1640, 148601), (1642, 148420), (1810, 134644), (3284, 74210), (3620, 67322), (4105, 59368), (6568, 37105), (7240, 33661), (7421, 32840), (8210, 29684), (14842, 16420)]