21947090

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{10501}}^1$

素因数の和:10538

約数の個数: 32

約数和(自身を含む): 45368640

約数和(自身を除く): 23421550

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 55, 95, 110, 190, 209, 418, 1045, 2090, 10501, 21002, 52505, 105010, 115511, 199519, 231022, 399038, 577555, 997595, 1155110, 1995190, 2194709, 4389418, 10973545, 21947090]

約数ペア:

[(1, 21947090), (2, 10973545), (5, 4389418), (10, 2194709), (11, 1995190), (19, 1155110), (22, 997595), (38, 577555), (55, 399038), (95, 231022), (110, 199519), (190, 115511), (209, 105010), (418, 52505), (1045, 21002), (2090, 10501)]