20131405

素因数分解:

$5^1\times 7^2\times {\mathrm{127}}^1\times {\mathrm{647}}^1$

素因数の和:793

約数の個数: 24

約数和(自身を含む): 28366848

約数和(自身を除く): 8235443

約数列:

[1, 5, 7, 35, 49, 127, 245, 635, 647, 889, 3235, 4445, 4529, 6223, 22645, 31115, 31703, 82169, 158515, 410845, 575183, 2875915, 4026281, 20131405]

約数ペア:

[(1, 20131405), (5, 4026281), (7, 2875915), (35, 575183), (49, 410845), (127, 158515), (245, 82169), (635, 31703), (647, 31115), (889, 22645), (3235, 6223), (4445, 4529)]