18907240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{443}}^1$

素因数の和:562

約数の個数: 64

約数和(自身を含む): 46992960

約数和(自身を除く): 28085720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 97, 110, 194, 220, 388, 440, 443, 485, 776, 886, 970, 1067, 1772, 1940, 2134, 2215, 3544, 3880, 4268, 4430, 4873, 5335, 8536, 8860, 9746, 10670, 17720, 19492, 21340, 24365, 38984, 42680, 42971, 48730, 85942, 97460, 171884, 194920, 214855, 343768, 429710, 472681, 859420, 945362, 1718840, 1890724, 2363405, 3781448, 4726810, 9453620, 18907240]

約数ペア:

[(1, 18907240), (2, 9453620), (4, 4726810), (5, 3781448), (8, 2363405), (10, 1890724), (11, 1718840), (20, 945362), (22, 859420), (40, 472681), (44, 429710), (55, 343768), (88, 214855), (97, 194920), (110, 171884), (194, 97460), (220, 85942), (388, 48730), (440, 42971), (443, 42680), (485, 38984), (776, 24365), (886, 21340), (970, 19492), (1067, 17720), (1772, 10670), (1940, 9746), (2134, 8860), (2215, 8536), (3544, 5335), (3880, 4873), (4268, 4430)]