20176490980

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{211}}^1\times {\mathrm{60521}}^1$

素因数の和:60820

約数の個数: 48

約数和(自身を含む): 43111031040

約数和(自身を除く): 22934540060

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 211, 316, 395, 422, 790, 844, 1055, 1580, 2110, 4220, 16669, 33338, 60521, 66676, 83345, 121042, 166690, 242084, 302605, 333380, 605210, 1210420, 4781159, 9562318, 12769931, 19124636, 23905795, 25539862, 47811590, 51079724, 63849655, 95623180, 127699310, 255398620, 1008824549, 2017649098, 4035298196, 5044122745, 10088245490, 20176490980]

約数ペア:

[(1, 20176490980), (2, 10088245490), (4, 5044122745), (5, 4035298196), (10, 2017649098), (20, 1008824549), (79, 255398620), (158, 127699310), (211, 95623180), (316, 63849655), (395, 51079724), (422, 47811590), (790, 25539862), (844, 23905795), (1055, 19124636), (1580, 12769931), (2110, 9562318), (4220, 4781159), (16669, 1210420), (33338, 605210), (60521, 333380), (66676, 302605), (83345, 242084), (121042, 166690)]