18781328

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{2381}}^1$

素因数の和:2435

約数の個数: 40

約数和(自身を含む): 39874680

約数和(自身を除く): 21093352

約数列:

[1, 2, 4, 8, 16, 17, 29, 34, 58, 68, 116, 136, 232, 272, 464, 493, 986, 1972, 2381, 3944, 4762, 7888, 9524, 19048, 38096, 40477, 69049, 80954, 138098, 161908, 276196, 323816, 552392, 647632, 1104784, 1173833, 2347666, 4695332, 9390664, 18781328]

約数ペア:

[(1, 18781328), (2, 9390664), (4, 4695332), (8, 2347666), (16, 1173833), (17, 1104784), (29, 647632), (34, 552392), (58, 323816), (68, 276196), (116, 161908), (136, 138098), (232, 80954), (272, 69049), (464, 40477), (493, 38096), (986, 19048), (1972, 9524), (2381, 7888), (3944, 4762)]