21780494

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{191}}^1$

素因数の和:320

約数の個数: 32

約数和(自身を含む): 35721216

約数和(自身を除く): 13940722

約数列:

[1, 2, 23, 37, 46, 67, 74, 134, 191, 382, 851, 1541, 1702, 2479, 3082, 4393, 4958, 7067, 8786, 12797, 14134, 25594, 57017, 114034, 162541, 294331, 325082, 473489, 588662, 946978, 10890247, 21780494]

約数ペア:

[(1, 21780494), (2, 10890247), (23, 946978), (37, 588662), (46, 473489), (67, 325082), (74, 294331), (134, 162541), (191, 114034), (382, 57017), (851, 25594), (1541, 14134), (1702, 12797), (2479, 8786), (3082, 7067), (4393, 4958)]