20199850

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1933}}^1$

素因数の和:1975

約数の個数: 48

約数和(自身を含む): 43166880

約数和(自身を除く): 22967030

約数列:

[1, 2, 5, 10, 11, 19, 22, 25, 38, 50, 55, 95, 110, 190, 209, 275, 418, 475, 550, 950, 1045, 1933, 2090, 3866, 5225, 9665, 10450, 19330, 21263, 36727, 42526, 48325, 73454, 96650, 106315, 183635, 212630, 367270, 403997, 531575, 807994, 918175, 1063150, 1836350, 2019985, 4039970, 10099925, 20199850]

約数ペア:

[(1, 20199850), (2, 10099925), (5, 4039970), (10, 2019985), (11, 1836350), (19, 1063150), (22, 918175), (25, 807994), (38, 531575), (50, 403997), (55, 367270), (95, 212630), (110, 183635), (190, 106315), (209, 96650), (275, 73454), (418, 48325), (475, 42526), (550, 36727), (950, 21263), (1045, 19330), (1933, 10450), (2090, 9665), (3866, 5225)]