25295180

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{439}}^1$

素因数の和:558

約数の個数: 48

約数和(自身を含む): 55292160

約数和(自身を除く): 29996980

約数列:

[1, 2, 4, 5, 10, 20, 43, 67, 86, 134, 172, 215, 268, 335, 430, 439, 670, 860, 878, 1340, 1756, 2195, 2881, 4390, 5762, 8780, 11524, 14405, 18877, 28810, 29413, 37754, 57620, 58826, 75508, 94385, 117652, 147065, 188770, 294130, 377540, 588260, 1264759, 2529518, 5059036, 6323795, 12647590, 25295180]

約数ペア:

[(1, 25295180), (2, 12647590), (4, 6323795), (5, 5059036), (10, 2529518), (20, 1264759), (43, 588260), (67, 377540), (86, 294130), (134, 188770), (172, 147065), (215, 117652), (268, 94385), (335, 75508), (430, 58826), (439, 57620), (670, 37754), (860, 29413), (878, 28810), (1340, 18877), (1756, 14405), (2195, 11524), (2881, 8780), (4390, 5762)]