280989880

素因数分解:

$2^3\times 5^1\times {\mathrm{367}}^1\times {\mathrm{19141}}^1$

素因数の和:19519

約数の個数: 32

約数和(自身を含む): 633983040

約数和(自身を除く): 352993160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 367, 734, 1468, 1835, 2936, 3670, 7340, 14680, 19141, 38282, 76564, 95705, 153128, 191410, 382820, 765640, 7024747, 14049494, 28098988, 35123735, 56197976, 70247470, 140494940, 280989880]

約数ペア:

[(1, 280989880), (2, 140494940), (4, 70247470), (5, 56197976), (8, 35123735), (10, 28098988), (20, 14049494), (40, 7024747), (367, 765640), (734, 382820), (1468, 191410), (1835, 153128), (2936, 95705), (3670, 76564), (7340, 38282), (14680, 19141)]