28538620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{1777}}^1$

素因数の和:1870

約数の個数: 48

約数和(自身を含む): 66312288

約数和(自身を除く): 37773668

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 73, 110, 146, 220, 292, 365, 730, 803, 1460, 1606, 1777, 3212, 3554, 4015, 7108, 8030, 8885, 16060, 17770, 19547, 35540, 39094, 78188, 97735, 129721, 195470, 259442, 390940, 518884, 648605, 1297210, 1426931, 2594420, 2853862, 5707724, 7134655, 14269310, 28538620]

約数ペア:

[(1, 28538620), (2, 14269310), (4, 7134655), (5, 5707724), (10, 2853862), (11, 2594420), (20, 1426931), (22, 1297210), (44, 648605), (55, 518884), (73, 390940), (110, 259442), (146, 195470), (220, 129721), (292, 97735), (365, 78188), (730, 39094), (803, 35540), (1460, 19547), (1606, 17770), (1777, 16060), (3212, 8885), (3554, 8030), (4015, 7108)]