81422140

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{1777}}^1$

素因数の和:1894

約数の個数: 48

約数和(自身を含む): 179222400

約数和(自身を除く): 97800260

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 79, 116, 145, 158, 290, 316, 395, 580, 790, 1580, 1777, 2291, 3554, 4582, 7108, 8885, 9164, 11455, 17770, 22910, 35540, 45820, 51533, 103066, 140383, 206132, 257665, 280766, 515330, 561532, 701915, 1030660, 1403830, 2807660, 4071107, 8142214, 16284428, 20355535, 40711070, 81422140]

約数ペア:

[(1, 81422140), (2, 40711070), (4, 20355535), (5, 16284428), (10, 8142214), (20, 4071107), (29, 2807660), (58, 1403830), (79, 1030660), (116, 701915), (145, 561532), (158, 515330), (290, 280766), (316, 257665), (395, 206132), (580, 140383), (790, 103066), (1580, 51533), (1777, 45820), (2291, 35540), (3554, 22910), (4582, 17770), (7108, 11455), (8885, 9164)]