8049682368020

素因数分解:

$2^2\times 5^1\times {\mathrm{643}}^1\times {\mathrm{3943}}^1\times {\mathrm{158749}}^1$

素因数の和:163344

約数の個数: 48

約数和(自身を含む): 16935023280000

約数和(自身を除く): 8885340911980

約数列:

[1, 2, 4, 5, 10, 20, 643, 1286, 2572, 3215, 3943, 6430, 7886, 12860, 15772, 19715, 39430, 78860, 158749, 317498, 634996, 793745, 1587490, 2535349, 3174980, 5070698, 10141396, 12676745, 25353490, 50706980, 102075607, 204151214, 408302428, 510378035, 625947307, 1020756070, 1251894614, 2041512140, 2503789228, 3129736535, 6259473070, 12518946140, 402484118401, 804968236802, 1609936473604, 2012420592005, 4024841184010, 8049682368020]

約数ペア:

[(1, 8049682368020), (2, 4024841184010), (4, 2012420592005), (5, 1609936473604), (10, 804968236802), (20, 402484118401), (643, 12518946140), (1286, 6259473070), (2572, 3129736535), (3215, 2503789228), (3943, 2041512140), (6430, 1251894614), (7886, 1020756070), (12860, 625947307), (15772, 510378035), (19715, 408302428), (39430, 204151214), (78860, 102075607), (158749, 50706980), (317498, 25353490), (634996, 12676745), (793745, 10141396), (1587490, 5070698), (2535349, 3174980)]