42090280

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{4987}}^1$

素因数の和:5209

約数の個数: 32

約数和(自身を含む): 95171040

約数和(自身を除く): 53080760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1688, 2110, 4220, 4987, 8440, 9974, 19948, 24935, 39896, 49870, 99740, 199480, 1052257, 2104514, 4209028, 5261285, 8418056, 10522570, 21045140, 42090280]

約数ペア:

[(1, 42090280), (2, 21045140), (4, 10522570), (5, 8418056), (8, 5261285), (10, 4209028), (20, 2104514), (40, 1052257), (211, 199480), (422, 99740), (844, 49870), (1055, 39896), (1688, 24935), (2110, 19948), (4220, 9974), (4987, 8440)]