90828880

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{15991}}^1$

素因数の和:16075

約数の個数: 40

約数和(自身を含む): 214164864

約数和(自身を除く): 123335984

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 5680, 15991, 31982, 63964, 79955, 127928, 159910, 255856, 319820, 639640, 1135361, 1279280, 2270722, 4541444, 5676805, 9082888, 11353610, 18165776, 22707220, 45414440, 90828880]

約数ペア:

[(1, 90828880), (2, 45414440), (4, 22707220), (5, 18165776), (8, 11353610), (10, 9082888), (16, 5676805), (20, 4541444), (40, 2270722), (71, 1279280), (80, 1135361), (142, 639640), (284, 319820), (355, 255856), (568, 159910), (710, 127928), (1136, 79955), (1420, 63964), (2840, 31982), (5680, 15991)]