20154320

素因数分解:

$2^4\times 5^1\times {\mathrm{191}}^1\times {\mathrm{1319}}^1$

素因数の和:1523

約数の個数: 40

約数和(自身を含む): 47139840

約数和(自身を除く): 26985520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 191, 382, 764, 955, 1319, 1528, 1910, 2638, 3056, 3820, 5276, 6595, 7640, 10552, 13190, 15280, 21104, 26380, 52760, 105520, 251929, 503858, 1007716, 1259645, 2015432, 2519290, 4030864, 5038580, 10077160, 20154320]

約数ペア:

[(1, 20154320), (2, 10077160), (4, 5038580), (5, 4030864), (8, 2519290), (10, 2015432), (16, 1259645), (20, 1007716), (40, 503858), (80, 251929), (191, 105520), (382, 52760), (764, 26380), (955, 21104), (1319, 15280), (1528, 13190), (1910, 10552), (2638, 7640), (3056, 6595), (3820, 5276)]