28143830

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19681}}^1$

素因数の和:19712

約数の個数: 32

約数和(自身を含む): 59518368

約数和(自身を除く): 31374538

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 110, 130, 143, 286, 715, 1430, 19681, 39362, 98405, 196810, 216491, 255853, 432982, 511706, 1082455, 1279265, 2164910, 2558530, 2814383, 5628766, 14071915, 28143830]

約数ペア:

[(1, 28143830), (2, 14071915), (5, 5628766), (10, 2814383), (11, 2558530), (13, 2164910), (22, 1279265), (26, 1082455), (55, 511706), (65, 432982), (110, 255853), (130, 216491), (143, 196810), (286, 98405), (715, 39362), (1430, 19681)]