18539480

素因数分解:

$2^3\times 5^1\times {\mathrm{269}}^1\times {\mathrm{1723}}^1$

素因数の和:2003

約数の個数: 32

約数和(自身を含む): 41893200

約数和(自身を除く): 23353720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 269, 538, 1076, 1345, 1723, 2152, 2690, 3446, 5380, 6892, 8615, 10760, 13784, 17230, 34460, 68920, 463487, 926974, 1853948, 2317435, 3707896, 4634870, 9269740, 18539480]

約数ペア:

[(1, 18539480), (2, 9269740), (4, 4634870), (5, 3707896), (8, 2317435), (10, 1853948), (20, 926974), (40, 463487), (269, 68920), (538, 34460), (1076, 17230), (1345, 13784), (1723, 10760), (2152, 8615), (2690, 6892), (3446, 5380)]