18506908

素因数分解:

$2^2\times 7^4\times {\mathrm{41}}^1\times {\mathrm{47}}^1$

素因数の和:120

約数の個数: 60

約数和(自身を含む): 39527712

約数和(自身を除く): 21020804

約数列:

[1, 2, 4, 7, 14, 28, 41, 47, 49, 82, 94, 98, 164, 188, 196, 287, 329, 343, 574, 658, 686, 1148, 1316, 1372, 1927, 2009, 2303, 2401, 3854, 4018, 4606, 4802, 7708, 8036, 9212, 9604, 13489, 14063, 16121, 26978, 28126, 32242, 53956, 56252, 64484, 94423, 98441, 112847, 188846, 196882, 225694, 377692, 393764, 451388, 660961, 1321922, 2643844, 4626727, 9253454, 18506908]

約数ペア:

[(1, 18506908), (2, 9253454), (4, 4626727), (7, 2643844), (14, 1321922), (28, 660961), (41, 451388), (47, 393764), (49, 377692), (82, 225694), (94, 196882), (98, 188846), (164, 112847), (188, 98441), (196, 94423), (287, 64484), (329, 56252), (343, 53956), (574, 32242), (658, 28126), (686, 26978), (1148, 16121), (1316, 14063), (1372, 13489), (1927, 9604), (2009, 9212), (2303, 8036), (2401, 7708), (3854, 4802), (4018, 4606)]