20191325

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{617}}^1$

素因数の和:662

約数の個数: 48

約数和(自身を含む): 33105024

約数和(自身を除く): 12913699

約数列:

[1, 5, 7, 11, 17, 25, 35, 55, 77, 85, 119, 175, 187, 275, 385, 425, 595, 617, 935, 1309, 1925, 2975, 3085, 4319, 4675, 6545, 6787, 10489, 15425, 21595, 32725, 33935, 47509, 52445, 73423, 107975, 115379, 169675, 237545, 262225, 367115, 576895, 807653, 1187725, 1835575, 2884475, 4038265, 20191325]

約数ペア:

[(1, 20191325), (5, 4038265), (7, 2884475), (11, 1835575), (17, 1187725), (25, 807653), (35, 576895), (55, 367115), (77, 262225), (85, 237545), (119, 169675), (175, 115379), (187, 107975), (275, 73423), (385, 52445), (425, 47509), (595, 33935), (617, 32725), (935, 21595), (1309, 15425), (1925, 10489), (2975, 6787), (3085, 6545), (4319, 4675)]