68719900

素因数分解:

$2^2\times 5^2\times {\mathrm{521}}^1\times {\mathrm{1319}}^1$

素因数の和:1854

約数の個数: 36

約数和(自身を含む): 149521680

約数和(自身を除く): 80801780

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 521, 1042, 1319, 2084, 2605, 2638, 5210, 5276, 6595, 10420, 13025, 13190, 26050, 26380, 32975, 52100, 65950, 131900, 687199, 1374398, 2748796, 3435995, 6871990, 13743980, 17179975, 34359950, 68719900]

約数ペア:

[(1, 68719900), (2, 34359950), (4, 17179975), (5, 13743980), (10, 6871990), (20, 3435995), (25, 2748796), (50, 1374398), (100, 687199), (521, 131900), (1042, 65950), (1319, 52100), (2084, 32975), (2605, 26380), (2638, 26050), (5210, 13190), (5276, 13025), (6595, 10420)]