21230140

素因数分解:

$2^2\times 5^1\times {\mathrm{271}}^1\times {\mathrm{3917}}^1$

素因数の和:4197

約数の個数: 24

約数和(自身を含む): 44759232

約数和(自身を除く): 23529092

約数列:

[1, 2, 4, 5, 10, 20, 271, 542, 1084, 1355, 2710, 3917, 5420, 7834, 15668, 19585, 39170, 78340, 1061507, 2123014, 4246028, 5307535, 10615070, 21230140]

約数ペア:

[(1, 21230140), (2, 10615070), (4, 5307535), (5, 4246028), (10, 2123014), (20, 1061507), (271, 78340), (542, 39170), (1084, 19585), (1355, 15668), (2710, 7834), (3917, 5420)]