18677320

素因数分解:

$2^3\times 5^1\times {\mathrm{271}}^1\times {\mathrm{1723}}^1$

素因数の和:2005

約数の個数: 32

約数和(自身を含む): 42203520

約数和(自身を除く): 23526200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 271, 542, 1084, 1355, 1723, 2168, 2710, 3446, 5420, 6892, 8615, 10840, 13784, 17230, 34460, 68920, 466933, 933866, 1867732, 2334665, 3735464, 4669330, 9338660, 18677320]

約数ペア:

[(1, 18677320), (2, 9338660), (4, 4669330), (5, 3735464), (8, 2334665), (10, 1867732), (20, 933866), (40, 466933), (271, 68920), (542, 34460), (1084, 17230), (1355, 13784), (1723, 10840), (2168, 8615), (2710, 6892), (3446, 5420)]