40428428

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:294

約数の個数: 48

約数和(自身を含む): 77616000

約数和(自身を除く): 37187572

約数列:

[1, 2, 4, 19, 38, 43, 76, 86, 89, 139, 172, 178, 278, 356, 556, 817, 1634, 1691, 2641, 3268, 3382, 3827, 5282, 5977, 6764, 7654, 10564, 11954, 12371, 15308, 23908, 24742, 49484, 72713, 113563, 145426, 227126, 235049, 290852, 454252, 470098, 531953, 940196, 1063906, 2127812, 10107107, 20214214, 40428428]

約数ペア:

[(1, 40428428), (2, 20214214), (4, 10107107), (19, 2127812), (38, 1063906), (43, 940196), (76, 531953), (86, 470098), (89, 454252), (139, 290852), (172, 235049), (178, 227126), (278, 145426), (356, 113563), (556, 72713), (817, 49484), (1634, 24742), (1691, 23908), (2641, 15308), (3268, 12371), (3382, 11954), (3827, 10564), (5282, 7654), (5977, 6764)]