18180640

素因数分解:

$2^5\times 5^1\times {\mathrm{199}}^1\times {\mathrm{571}}^1$

素因数の和:785

約数の個数: 48

約数和(自身を含む): 43243200

約数和(自身を除く): 25062560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 199, 398, 571, 796, 995, 1142, 1592, 1990, 2284, 2855, 3184, 3980, 4568, 5710, 6368, 7960, 9136, 11420, 15920, 18272, 22840, 31840, 45680, 91360, 113629, 227258, 454516, 568145, 909032, 1136290, 1818064, 2272580, 3636128, 4545160, 9090320, 18180640]

約数ペア:

[(1, 18180640), (2, 9090320), (4, 4545160), (5, 3636128), (8, 2272580), (10, 1818064), (16, 1136290), (20, 909032), (32, 568145), (40, 454516), (80, 227258), (160, 113629), (199, 91360), (398, 45680), (571, 31840), (796, 22840), (995, 18272), (1142, 15920), (1592, 11420), (1990, 9136), (2284, 7960), (2855, 6368), (3184, 5710), (3980, 4568)]