18411320

素因数分解:

$2^3\times 5^1\times {\mathrm{181}}^1\times {\mathrm{2543}}^1$

素因数の和:2735

約数の個数: 32

約数和(自身を含む): 41670720

約数和(自身を除く): 23259400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 181, 362, 724, 905, 1448, 1810, 2543, 3620, 5086, 7240, 10172, 12715, 20344, 25430, 50860, 101720, 460283, 920566, 1841132, 2301415, 3682264, 4602830, 9205660, 18411320]

約数ペア:

[(1, 18411320), (2, 9205660), (4, 4602830), (5, 3682264), (8, 2301415), (10, 1841132), (20, 920566), (40, 460283), (181, 101720), (362, 50860), (724, 25430), (905, 20344), (1448, 12715), (1810, 10172), (2543, 7240), (3620, 5086)]