20913390

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{25819}}^1$

素因数の和:25838

約数の個数: 40

約数和(自身を含む): 56235960

約数和(自身を除く): 35322570

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 135, 162, 270, 405, 810, 25819, 51638, 77457, 129095, 154914, 232371, 258190, 387285, 464742, 697113, 774570, 1161855, 1394226, 2091339, 2323710, 3485565, 4182678, 6971130, 10456695, 20913390]

約数ペア:

[(1, 20913390), (2, 10456695), (3, 6971130), (5, 4182678), (6, 3485565), (9, 2323710), (10, 2091339), (15, 1394226), (18, 1161855), (27, 774570), (30, 697113), (45, 464742), (54, 387285), (81, 258190), (90, 232371), (135, 154914), (162, 129095), (270, 77457), (405, 51638), (810, 25819)]