18685040

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1249}}^1$

素因数の和:1290

約数の個数: 80

約数和(自身を含む): 50220000

約数和(自身を除く): 31534960

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 17, 20, 22, 34, 40, 44, 55, 68, 80, 85, 88, 110, 136, 170, 176, 187, 220, 272, 340, 374, 440, 680, 748, 880, 935, 1249, 1360, 1496, 1870, 2498, 2992, 3740, 4996, 6245, 7480, 9992, 12490, 13739, 14960, 19984, 21233, 24980, 27478, 42466, 49960, 54956, 68695, 84932, 99920, 106165, 109912, 137390, 169864, 212330, 219824, 233563, 274780, 339728, 424660, 467126, 549560, 849320, 934252, 1099120, 1167815, 1698640, 1868504, 2335630, 3737008, 4671260, 9342520, 18685040]

約数ペア:

[(1, 18685040), (2, 9342520), (4, 4671260), (5, 3737008), (8, 2335630), (10, 1868504), (11, 1698640), (16, 1167815), (17, 1099120), (20, 934252), (22, 849320), (34, 549560), (40, 467126), (44, 424660), (55, 339728), (68, 274780), (80, 233563), (85, 219824), (88, 212330), (110, 169864), (136, 137390), (170, 109912), (176, 106165), (187, 99920), (220, 84932), (272, 68695), (340, 54956), (374, 49960), (440, 42466), (680, 27478), (748, 24980), (880, 21233), (935, 19984), (1249, 14960), (1360, 13739), (1496, 12490), (1870, 9992), (2498, 7480), (2992, 6245), (3740, 4996)]