25138900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{131}}^1$

素因数の和:265

約数の個数: 72

約数和(自身を含む): 58433760

約数和(自身を除く): 33294860

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 101, 131, 190, 202, 262, 380, 404, 475, 505, 524, 655, 950, 1010, 1310, 1900, 1919, 2020, 2489, 2525, 2620, 3275, 3838, 4978, 5050, 6550, 7676, 9595, 9956, 10100, 12445, 13100, 13231, 19190, 24890, 26462, 38380, 47975, 49780, 52924, 62225, 66155, 95950, 124450, 132310, 191900, 248900, 251389, 264620, 330775, 502778, 661550, 1005556, 1256945, 1323100, 2513890, 5027780, 6284725, 12569450, 25138900]

約数ペア:

[(1, 25138900), (2, 12569450), (4, 6284725), (5, 5027780), (10, 2513890), (19, 1323100), (20, 1256945), (25, 1005556), (38, 661550), (50, 502778), (76, 330775), (95, 264620), (100, 251389), (101, 248900), (131, 191900), (190, 132310), (202, 124450), (262, 95950), (380, 66155), (404, 62225), (475, 52924), (505, 49780), (524, 47975), (655, 38380), (950, 26462), (1010, 24890), (1310, 19190), (1900, 13231), (1919, 13100), (2020, 12445), (2489, 10100), (2525, 9956), (2620, 9595), (3275, 7676), (3838, 6550), (4978, 5050)]