18181760

素因数分解:

$2^7\times 5^1\times {\mathrm{28409}}^1$

素因数の和:28428

約数の個数: 32

約数和(自身を含む): 43467300

約数和(自身を除く): 25285540

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 28409, 56818, 113636, 142045, 227272, 284090, 454544, 568180, 909088, 1136360, 1818176, 2272720, 3636352, 4545440, 9090880, 18181760]

約数ペア:

[(1, 18181760), (2, 9090880), (4, 4545440), (5, 3636352), (8, 2272720), (10, 1818176), (16, 1136360), (20, 909088), (32, 568180), (40, 454544), (64, 284090), (80, 227272), (128, 142045), (160, 113636), (320, 56818), (640, 28409)]