18628816

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{233}}^1\times {\mathrm{263}}^1$

素因数の和:523

約数の個数: 40

約数和(自身を含む): 38301120

約数和(自身を除く): 19672304

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 233, 263, 304, 466, 526, 932, 1052, 1864, 2104, 3728, 4208, 4427, 4997, 8854, 9994, 17708, 19988, 35416, 39976, 61279, 70832, 79952, 122558, 245116, 490232, 980464, 1164301, 2328602, 4657204, 9314408, 18628816]

約数ペア:

[(1, 18628816), (2, 9314408), (4, 4657204), (8, 2328602), (16, 1164301), (19, 980464), (38, 490232), (76, 245116), (152, 122558), (233, 79952), (263, 70832), (304, 61279), (466, 39976), (526, 35416), (932, 19988), (1052, 17708), (1864, 9994), (2104, 8854), (3728, 4997), (4208, 4427)]