12987160

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{7919}}^1$

素因数の和:7971

約数の個数: 32

約数和(自身を含む): 29937600

約数和(自身を除く): 16950440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 7919, 15838, 31676, 39595, 63352, 79190, 158380, 316760, 324679, 649358, 1298716, 1623395, 2597432, 3246790, 6493580, 12987160]

約数ペア:

[(1, 12987160), (2, 6493580), (4, 3246790), (5, 2597432), (8, 1623395), (10, 1298716), (20, 649358), (40, 324679), (41, 316760), (82, 158380), (164, 79190), (205, 63352), (328, 39595), (410, 31676), (820, 15838), (1640, 7919)]