256813921

素因数分解:

$7^1\times {\mathrm{13}}^3\times {\mathrm{16699}}^1$

素因数の和:16745

約数の個数: 16

約数和(自身を含む): 317968000

約数和(自身を除く): 61154079

約数列:

[1, 7, 13, 91, 169, 1183, 2197, 15379, 16699, 116893, 217087, 1519609, 2822131, 19754917, 36687703, 256813921]

約数ペア:

[(1, 256813921), (7, 36687703), (13, 19754917), (91, 2822131), (169, 1519609), (1183, 217087), (2197, 116893), (15379, 16699)]