21250531

素因数分解:

${\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{331}}^1$

素因数の和:490

約数の個数: 16

約数和(自身を含む): 23372800

約数和(自身を除く): 2122269

約数列:

[1, 19, 31, 109, 331, 589, 2071, 3379, 6289, 10261, 36079, 64201, 194959, 685501, 1118449, 21250531]

約数ペア:

[(1, 21250531), (19, 1118449), (31, 685501), (109, 194959), (331, 64201), (589, 36079), (2071, 10261), (3379, 6289)]