168697780

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{419}}^1\times {\mathrm{491}}^1$

素因数の和:960

約数の個数: 48

約数和(自身を含む): 364512960

約数和(自身を除く): 195815180

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 419, 491, 820, 838, 982, 1676, 1964, 2095, 2455, 4190, 4910, 8380, 9820, 17179, 20131, 34358, 40262, 68716, 80524, 85895, 100655, 171790, 201310, 205729, 343580, 402620, 411458, 822916, 1028645, 2057290, 4114580, 8434889, 16869778, 33739556, 42174445, 84348890, 168697780]

約数ペア:

[(1, 168697780), (2, 84348890), (4, 42174445), (5, 33739556), (10, 16869778), (20, 8434889), (41, 4114580), (82, 2057290), (164, 1028645), (205, 822916), (410, 411458), (419, 402620), (491, 343580), (820, 205729), (838, 201310), (982, 171790), (1676, 100655), (1964, 85895), (2095, 80524), (2455, 68716), (4190, 40262), (4910, 34358), (8380, 20131), (9820, 17179)]