780331340

素因数分解:

$2^2\times 5^1\times {\mathrm{269}}^1\times {\mathrm{145043}}^1$

素因数の和:145321

約数の個数: 24

約数和(自身を含む): 1644798960

約数和(自身を除く): 864467620

約数列:

[1, 2, 4, 5, 10, 20, 269, 538, 1076, 1345, 2690, 5380, 145043, 290086, 580172, 725215, 1450430, 2900860, 39016567, 78033134, 156066268, 195082835, 390165670, 780331340]

約数ペア:

[(1, 780331340), (2, 390165670), (4, 195082835), (5, 156066268), (10, 78033134), (20, 39016567), (269, 2900860), (538, 1450430), (1076, 725215), (1345, 580172), (2690, 290086), (5380, 145043)]