18140915

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{397}}^1$

素因数の和:471

約数の個数: 32

約数和(自身を含む): 25408320

約数和(自身を除く): 7267405

約数列:

[1, 5, 13, 19, 37, 65, 95, 185, 247, 397, 481, 703, 1235, 1985, 2405, 3515, 5161, 7543, 9139, 14689, 25805, 37715, 45695, 73445, 98059, 190957, 279091, 490295, 954785, 1395455, 3628183, 18140915]

約数ペア:

[(1, 18140915), (5, 3628183), (13, 1395455), (19, 954785), (37, 490295), (65, 279091), (95, 190957), (185, 98059), (247, 73445), (397, 45695), (481, 37715), (703, 25805), (1235, 14689), (1985, 9139), (2405, 7543), (3515, 5161)]