21982135

素因数分解:

$5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1$

素因数の和:172

約数の個数: 48

約数和(自身を含む): 33094656

約数和(自身を除く): 11112521

約数列:

[1, 5, 7, 23, 35, 47, 49, 83, 115, 161, 235, 245, 329, 415, 581, 805, 1081, 1127, 1645, 1909, 2303, 2905, 3901, 4067, 5405, 5635, 7567, 9545, 11515, 13363, 19505, 20335, 27307, 37835, 52969, 66815, 89723, 93541, 136535, 191149, 264845, 448615, 467705, 628061, 955745, 3140305, 4396427, 21982135]

約数ペア:

[(1, 21982135), (5, 4396427), (7, 3140305), (23, 955745), (35, 628061), (47, 467705), (49, 448615), (83, 264845), (115, 191149), (161, 136535), (235, 93541), (245, 89723), (329, 66815), (415, 52969), (581, 37835), (805, 27307), (1081, 20335), (1127, 19505), (1645, 13363), (1909, 11515), (2303, 9545), (2905, 7567), (3901, 5635), (4067, 5405)]