21063160

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{4831}}^1$

素因数の和:4951

約数の個数: 32

約数和(自身を含む): 47836800

約数和(自身を除く): 26773640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 4831, 9662, 19324, 24155, 38648, 48310, 96620, 193240, 526579, 1053158, 2106316, 2632895, 4212632, 5265790, 10531580, 21063160]

約数ペア:

[(1, 21063160), (2, 10531580), (4, 5265790), (5, 4212632), (8, 2632895), (10, 2106316), (20, 1053158), (40, 526579), (109, 193240), (218, 96620), (436, 48310), (545, 38648), (872, 24155), (1090, 19324), (2180, 9662), (4360, 4831)]