161809921

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{19979}}^1$

素因数の和:20088

約数の個数: 16

約数和(自身を含む): 201398400

約数和(自身を除く): 39588479

約数列:

[1, 7, 13, 89, 91, 623, 1157, 8099, 19979, 139853, 259727, 1778131, 1818089, 12446917, 23115703, 161809921]

約数ペア:

[(1, 161809921), (7, 23115703), (13, 12446917), (89, 1818089), (91, 1778131), (623, 259727), (1157, 139853), (8099, 19979)]