251213495

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{307}}^1\times {\mathrm{12589}}^1$

素因数の和:12914

約数の個数: 16

約数和(自身を含む): 325728480

約数和(自身を除く): 74514985

約数列:

[1, 5, 13, 65, 307, 1535, 3991, 12589, 19955, 62945, 163657, 818285, 3864823, 19324115, 50242699, 251213495]

約数ペア:

[(1, 251213495), (5, 50242699), (13, 19324115), (65, 3864823), (307, 818285), (1535, 163657), (3991, 62945), (12589, 19955)]