21556315

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{269}}^1$

素因数の和:363

約数の個数: 32

約数和(自身を含む): 29859840

約数和(自身を除く): 8303525

約数列:

[1, 5, 11, 31, 47, 55, 155, 235, 269, 341, 517, 1345, 1457, 1705, 2585, 2959, 7285, 8339, 12643, 14795, 16027, 41695, 63215, 80135, 91729, 139073, 391933, 458645, 695365, 1959665, 4311263, 21556315]

約数ペア:

[(1, 21556315), (5, 4311263), (11, 1959665), (31, 695365), (47, 458645), (55, 391933), (155, 139073), (235, 91729), (269, 80135), (341, 63215), (517, 41695), (1345, 16027), (1457, 14795), (1705, 12643), (2585, 8339), (2959, 7285)]