18451520

素因数分解:

$2^6\times 5^1\times {\mathrm{23}}^2\times {\mathrm{109}}^1$

素因数の和:172

約数の個数: 84

約数和(自身を含む): 46352460

約数和(自身を除く): 27900940

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 64, 80, 92, 109, 115, 160, 184, 218, 230, 320, 368, 436, 460, 529, 545, 736, 872, 920, 1058, 1090, 1472, 1744, 1840, 2116, 2180, 2507, 2645, 3488, 3680, 4232, 4360, 5014, 5290, 6976, 7360, 8464, 8720, 10028, 10580, 12535, 16928, 17440, 20056, 21160, 25070, 33856, 34880, 40112, 42320, 50140, 57661, 80224, 84640, 100280, 115322, 160448, 169280, 200560, 230644, 288305, 401120, 461288, 576610, 802240, 922576, 1153220, 1845152, 2306440, 3690304, 4612880, 9225760, 18451520]

約数ペア:

[(1, 18451520), (2, 9225760), (4, 4612880), (5, 3690304), (8, 2306440), (10, 1845152), (16, 1153220), (20, 922576), (23, 802240), (32, 576610), (40, 461288), (46, 401120), (64, 288305), (80, 230644), (92, 200560), (109, 169280), (115, 160448), (160, 115322), (184, 100280), (218, 84640), (230, 80224), (320, 57661), (368, 50140), (436, 42320), (460, 40112), (529, 34880), (545, 33856), (736, 25070), (872, 21160), (920, 20056), (1058, 17440), (1090, 16928), (1472, 12535), (1744, 10580), (1840, 10028), (2116, 8720), (2180, 8464), (2507, 7360), (2645, 6976), (3488, 5290), (3680, 5014), (4232, 4360)]