18222040

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^2\times {\mathrm{271}}^1$

素因数の和:364

約数の個数: 48

約数和(自身を含む): 42179040

約数和(自身を除く): 23957000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 271, 328, 410, 542, 820, 1084, 1355, 1640, 1681, 2168, 2710, 3362, 5420, 6724, 8405, 10840, 11111, 13448, 16810, 22222, 33620, 44444, 55555, 67240, 88888, 111110, 222220, 444440, 455551, 911102, 1822204, 2277755, 3644408, 4555510, 9111020, 18222040]

約数ペア:

[(1, 18222040), (2, 9111020), (4, 4555510), (5, 3644408), (8, 2277755), (10, 1822204), (20, 911102), (40, 455551), (41, 444440), (82, 222220), (164, 111110), (205, 88888), (271, 67240), (328, 55555), (410, 44444), (542, 33620), (820, 22222), (1084, 16810), (1355, 13448), (1640, 11111), (1681, 10840), (2168, 8405), (2710, 6724), (3362, 5420)]