18827240

素因数分解:

$2^3\times 5^1\times {\mathrm{461}}^1\times {\mathrm{1021}}^1$

素因数の和:1493

約数の個数: 32

約数和(自身を含む): 42494760

約数和(自身を除く): 23667520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 461, 922, 1021, 1844, 2042, 2305, 3688, 4084, 4610, 5105, 8168, 9220, 10210, 18440, 20420, 40840, 470681, 941362, 1882724, 2353405, 3765448, 4706810, 9413620, 18827240]

約数ペア:

[(1, 18827240), (2, 9413620), (4, 4706810), (5, 3765448), (8, 2353405), (10, 1882724), (20, 941362), (40, 470681), (461, 40840), (922, 20420), (1021, 18440), (1844, 10210), (2042, 9220), (2305, 8168), (3688, 5105), (4084, 4610)]