164465240

素因数分解:

$2^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{16381}}^1$

素因数の和:16643

約数の個数: 32

約数和(自身を含む): 371543760

約数和(自身を除く): 207078520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 251, 502, 1004, 1255, 2008, 2510, 5020, 10040, 16381, 32762, 65524, 81905, 131048, 163810, 327620, 655240, 4111631, 8223262, 16446524, 20558155, 32893048, 41116310, 82232620, 164465240]

約数ペア:

[(1, 164465240), (2, 82232620), (4, 41116310), (5, 32893048), (8, 20558155), (10, 16446524), (20, 8223262), (40, 4111631), (251, 655240), (502, 327620), (1004, 163810), (1255, 131048), (2008, 81905), (2510, 65524), (5020, 32762), (10040, 16381)]