816347240

素因数分解:

$2^3\times 5^1\times {\mathrm{1283}}^1\times {\mathrm{15907}}^1$

素因数の和:17201

約数の個数: 32

約数和(自身を含む): 1838328480

約数和(自身を除く): 1021981240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1283, 2566, 5132, 6415, 10264, 12830, 15907, 25660, 31814, 51320, 63628, 79535, 127256, 159070, 318140, 636280, 20408681, 40817362, 81634724, 102043405, 163269448, 204086810, 408173620, 816347240]

約数ペア:

[(1, 816347240), (2, 408173620), (4, 204086810), (5, 163269448), (8, 102043405), (10, 81634724), (20, 40817362), (40, 20408681), (1283, 636280), (2566, 318140), (5132, 159070), (6415, 127256), (10264, 79535), (12830, 63628), (15907, 51320), (25660, 31814)]