249980

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{431}}^1$

素因数の和:469

約数の個数: 24

約数和(自身を含む): 544320

約数和(自身を除く): 294340

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 431, 580, 862, 1724, 2155, 4310, 8620, 12499, 24998, 49996, 62495, 124990, 249980]

約数ペア:

[(1, 249980), (2, 124990), (4, 62495), (5, 49996), (10, 24998), (20, 12499), (29, 8620), (58, 4310), (116, 2155), (145, 1724), (290, 862), (431, 580)]