19420020009

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{12767929}}^1$

素因数の和:12767961

約数の個数: 18

約数和(自身を含む): 30374905470

約数和(自身を除く): 10954885461

約数列:

[1, 3, 9, 13, 39, 117, 169, 507, 1521, 12767929, 38303787, 114911361, 165983077, 497949231, 1493847693, 2157780001, 6473340003, 19420020009]

約数ペア:

[(1, 19420020009), (3, 6473340003), (9, 2157780001), (13, 1493847693), (39, 497949231), (117, 165983077), (169, 114911361), (507, 38303787), (1521, 12767929)]