20957090

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1601}}^1$

素因数の和:1643

約数の個数: 64

約数和(自身を含む): 49828608

約数和(自身を除く): 28871518

約数列:

[1, 2, 5, 7, 10, 11, 14, 17, 22, 34, 35, 55, 70, 77, 85, 110, 119, 154, 170, 187, 238, 374, 385, 595, 770, 935, 1190, 1309, 1601, 1870, 2618, 3202, 6545, 8005, 11207, 13090, 16010, 17611, 22414, 27217, 35222, 54434, 56035, 88055, 112070, 123277, 136085, 176110, 190519, 246554, 272170, 299387, 381038, 598774, 616385, 952595, 1232770, 1496935, 1905190, 2095709, 2993870, 4191418, 10478545, 20957090]

約数ペア:

[(1, 20957090), (2, 10478545), (5, 4191418), (7, 2993870), (10, 2095709), (11, 1905190), (14, 1496935), (17, 1232770), (22, 952595), (34, 616385), (35, 598774), (55, 381038), (70, 299387), (77, 272170), (85, 246554), (110, 190519), (119, 176110), (154, 136085), (170, 123277), (187, 112070), (238, 88055), (374, 56035), (385, 54434), (595, 35222), (770, 27217), (935, 22414), (1190, 17611), (1309, 16010), (1601, 13090), (1870, 11207), (2618, 8005), (3202, 6545)]