20741900

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{5059}}^1$

素因数の和:5114

約数の個数: 36

約数和(自身を含む): 46116840

約数和(自身を除く): 25374940

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 164, 205, 410, 820, 1025, 2050, 4100, 5059, 10118, 20236, 25295, 50590, 101180, 126475, 207419, 252950, 414838, 505900, 829676, 1037095, 2074190, 4148380, 5185475, 10370950, 20741900]

約数ペア:

[(1, 20741900), (2, 10370950), (4, 5185475), (5, 4148380), (10, 2074190), (20, 1037095), (25, 829676), (41, 505900), (50, 414838), (82, 252950), (100, 207419), (164, 126475), (205, 101180), (410, 50590), (820, 25295), (1025, 20236), (2050, 10118), (4100, 5059)]