18384140

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{389}}^1$

素因数の和:554

約数の個数: 48

約数和(自身を含む): 41277600

約数和(自身を除く): 22893460

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 139, 170, 278, 340, 389, 556, 695, 778, 1390, 1556, 1945, 2363, 2780, 3890, 4726, 6613, 7780, 9452, 11815, 13226, 23630, 26452, 33065, 47260, 54071, 66130, 108142, 132260, 216284, 270355, 540710, 919207, 1081420, 1838414, 3676828, 4596035, 9192070, 18384140]

約数ペア:

[(1, 18384140), (2, 9192070), (4, 4596035), (5, 3676828), (10, 1838414), (17, 1081420), (20, 919207), (34, 540710), (68, 270355), (85, 216284), (139, 132260), (170, 108142), (278, 66130), (340, 54071), (389, 47260), (556, 33065), (695, 26452), (778, 23630), (1390, 13226), (1556, 11815), (1945, 9452), (2363, 7780), (2780, 6613), (3890, 4726)]