205678890

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{53147}}^1$

素因数の和:53203

約数の個数: 48

約数和(自身を含む): 547211808

約数和(自身を除く): 341532918

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 43, 45, 86, 90, 129, 215, 258, 387, 430, 645, 774, 1290, 1935, 3870, 53147, 106294, 159441, 265735, 318882, 478323, 531470, 797205, 956646, 1594410, 2285321, 2391615, 4570642, 4783230, 6855963, 11426605, 13711926, 20567889, 22853210, 34279815, 41135778, 68559630, 102839445, 205678890]

約数ペア:

[(1, 205678890), (2, 102839445), (3, 68559630), (5, 41135778), (6, 34279815), (9, 22853210), (10, 20567889), (15, 13711926), (18, 11426605), (30, 6855963), (43, 4783230), (45, 4570642), (86, 2391615), (90, 2285321), (129, 1594410), (215, 956646), (258, 797205), (387, 531470), (430, 478323), (645, 318882), (774, 265735), (1290, 159441), (1935, 106294), (3870, 53147)]