18485840

素因数分解:

$2^4\times 5^1\times {\mathrm{311}}^1\times {\mathrm{743}}^1$

素因数の和:1067

約数の個数: 40

約数和(自身を含む): 43175808

約数和(自身を除く): 24689968

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 311, 622, 743, 1244, 1486, 1555, 2488, 2972, 3110, 3715, 4976, 5944, 6220, 7430, 11888, 12440, 14860, 24880, 29720, 59440, 231073, 462146, 924292, 1155365, 1848584, 2310730, 3697168, 4621460, 9242920, 18485840]

約数ペア:

[(1, 18485840), (2, 9242920), (4, 4621460), (5, 3697168), (8, 2310730), (10, 1848584), (16, 1155365), (20, 924292), (40, 462146), (80, 231073), (311, 59440), (622, 29720), (743, 24880), (1244, 14860), (1486, 12440), (1555, 11888), (2488, 7430), (2972, 6220), (3110, 5944), (3715, 4976)]