19951240

素因数分解:

$2^3\times 5^1\times {\mathrm{498781}}^1$

素因数の和:498792

約数の個数: 16

約数和(自身を含む): 44890380

約数和(自身を除く): 24939140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 498781, 997562, 1995124, 2493905, 3990248, 4987810, 9975620, 19951240]

約数ペア:

[(1, 19951240), (2, 9975620), (4, 4987810), (5, 3990248), (8, 2493905), (10, 1995124), (20, 997562), (40, 498781)]