19894778

素因数分解:

$2^1\times {\mathrm{101}}^1\times {\mathrm{149}}^1\times {\mathrm{661}}^1$

素因数の和:913

約数の個数: 16

約数和(自身を含む): 30385800

約数和(自身を除く): 10491022

約数列:

[1, 2, 101, 149, 202, 298, 661, 1322, 15049, 30098, 66761, 98489, 133522, 196978, 9947389, 19894778]

約数ペア:

[(1, 19894778), (2, 9947389), (101, 196978), (149, 133522), (202, 98489), (298, 66761), (661, 30098), (1322, 15049)]