21972550

素因数分解:

$2^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{229}}^1$

素因数の和:361

約数の個数: 48

約数和(自身を含む): 43635600

約数和(自身を除く): 21663050

約数列:

[1, 2, 5, 10, 19, 25, 38, 50, 95, 101, 190, 202, 229, 458, 475, 505, 950, 1010, 1145, 1919, 2290, 2525, 3838, 4351, 5050, 5725, 8702, 9595, 11450, 19190, 21755, 23129, 43510, 46258, 47975, 95950, 108775, 115645, 217550, 231290, 439451, 578225, 878902, 1156450, 2197255, 4394510, 10986275, 21972550]

約数ペア:

[(1, 21972550), (2, 10986275), (5, 4394510), (10, 2197255), (19, 1156450), (25, 878902), (38, 578225), (50, 439451), (95, 231290), (101, 217550), (190, 115645), (202, 108775), (229, 95950), (458, 47975), (475, 46258), (505, 43510), (950, 23129), (1010, 21755), (1145, 19190), (1919, 11450), (2290, 9595), (2525, 8702), (3838, 5725), (4351, 5050)]