26513980

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1\times {\mathrm{173}}^1$

素因数の和:358

約数の個数: 48

約数和(自身を含む): 57294720

約数和(自身を除く): 30780740

約数列:

[1, 2, 4, 5, 10, 20, 79, 97, 158, 173, 194, 316, 346, 388, 395, 485, 692, 790, 865, 970, 1580, 1730, 1940, 3460, 7663, 13667, 15326, 16781, 27334, 30652, 33562, 38315, 54668, 67124, 68335, 76630, 83905, 136670, 153260, 167810, 273340, 335620, 1325699, 2651398, 5302796, 6628495, 13256990, 26513980]

約数ペア:

[(1, 26513980), (2, 13256990), (4, 6628495), (5, 5302796), (10, 2651398), (20, 1325699), (79, 335620), (97, 273340), (158, 167810), (173, 153260), (194, 136670), (316, 83905), (346, 76630), (388, 68335), (395, 67124), (485, 54668), (692, 38315), (790, 33562), (865, 30652), (970, 27334), (1580, 16781), (1730, 15326), (1940, 13667), (3460, 7663)]