19931171

素因数分解:

${\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{137}}^1$

素因数の和:219

約数の個数: 24

約数和(自身を含む): 23554944

約数和(自身を除く): 3623773

約数列:

[1, 13, 19, 31, 137, 247, 361, 403, 589, 1781, 2603, 4247, 4693, 7657, 11191, 33839, 49457, 55211, 80693, 145483, 642941, 1049009, 1533167, 19931171]

約数ペア:

[(1, 19931171), (13, 1533167), (19, 1049009), (31, 642941), (137, 145483), (247, 80693), (361, 55211), (403, 49457), (589, 33839), (1781, 11191), (2603, 7657), (4247, 4693)]