12625780

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 27498240

約数和(自身を除く): 14872460

約数列:

[1, 2, 4, 5, 10, 20, 61, 79, 122, 131, 158, 244, 262, 305, 316, 395, 524, 610, 655, 790, 1220, 1310, 1580, 2620, 4819, 7991, 9638, 10349, 15982, 19276, 20698, 24095, 31964, 39955, 41396, 48190, 51745, 79910, 96380, 103490, 159820, 206980, 631289, 1262578, 2525156, 3156445, 6312890, 12625780]

約数ペア:

[(1, 12625780), (2, 6312890), (4, 3156445), (5, 2525156), (10, 1262578), (20, 631289), (61, 206980), (79, 159820), (122, 103490), (131, 96380), (158, 79910), (244, 51745), (262, 48190), (305, 41396), (316, 39955), (395, 31964), (524, 24095), (610, 20698), (655, 19276), (790, 15982), (1220, 10349), (1310, 9638), (1580, 7991), (2620, 4819)]