21128950

素因数分解:

$2^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{967}}^1$

素因数の和:1021

約数の個数: 48

約数和(自身を含む): 43211520

約数和(自身を除く): 22082570

約数列:

[1, 2, 5, 10, 19, 23, 25, 38, 46, 50, 95, 115, 190, 230, 437, 475, 575, 874, 950, 967, 1150, 1934, 2185, 4370, 4835, 9670, 10925, 18373, 21850, 22241, 24175, 36746, 44482, 48350, 91865, 111205, 183730, 222410, 422579, 459325, 556025, 845158, 918650, 1112050, 2112895, 4225790, 10564475, 21128950]

約数ペア:

[(1, 21128950), (2, 10564475), (5, 4225790), (10, 2112895), (19, 1112050), (23, 918650), (25, 845158), (38, 556025), (46, 459325), (50, 422579), (95, 222410), (115, 183730), (190, 111205), (230, 91865), (437, 48350), (475, 44482), (575, 36746), (874, 24175), (950, 22241), (967, 21850), (1150, 18373), (1934, 10925), (2185, 9670), (4370, 4835)]