203940820

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{421}}^1\times {\mathrm{457}}^1$

素因数の和:940

約数の個数: 48

約数和(自身を含む): 438349968

約数和(自身を除く): 234409148

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 421, 457, 530, 842, 914, 1060, 1684, 1828, 2105, 2285, 4210, 4570, 8420, 9140, 22313, 24221, 44626, 48442, 89252, 96884, 111565, 121105, 192397, 223130, 242210, 384794, 446260, 484420, 769588, 961985, 1923970, 3847940, 10197041, 20394082, 40788164, 50985205, 101970410, 203940820]

約数ペア:

[(1, 203940820), (2, 101970410), (4, 50985205), (5, 40788164), (10, 20394082), (20, 10197041), (53, 3847940), (106, 1923970), (212, 961985), (265, 769588), (421, 484420), (457, 446260), (530, 384794), (842, 242210), (914, 223130), (1060, 192397), (1684, 121105), (1828, 111565), (2105, 96884), (2285, 89252), (4210, 48442), (4570, 44626), (8420, 24221), (9140, 22313)]