1019980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{3923}}^1$

素因数の和:3945

約数の個数: 24

約数和(自身を含む): 2307312

約数和(自身を除く): 1287332

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 3923, 7846, 15692, 19615, 39230, 50999, 78460, 101998, 203996, 254995, 509990, 1019980]

約数ペア:

[(1, 1019980), (2, 509990), (4, 254995), (5, 203996), (10, 101998), (13, 78460), (20, 50999), (26, 39230), (52, 19615), (65, 15692), (130, 7846), (260, 3923)]