51691280

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{8179}}^1$

素因数の和:8271

約数の個数: 40

約数和(自身を含む): 121718400

約数和(自身を除く): 70027120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 3160, 6320, 8179, 16358, 32716, 40895, 65432, 81790, 130864, 163580, 327160, 646141, 654320, 1292282, 2584564, 3230705, 5169128, 6461410, 10338256, 12922820, 25845640, 51691280]

約数ペア:

[(1, 51691280), (2, 25845640), (4, 12922820), (5, 10338256), (8, 6461410), (10, 5169128), (16, 3230705), (20, 2584564), (40, 1292282), (79, 654320), (80, 646141), (158, 327160), (316, 163580), (395, 130864), (632, 81790), (790, 65432), (1264, 40895), (1580, 32716), (3160, 16358), (6320, 8179)]