81194020

素因数分解:

$2^2\times 5^1\times {\mathrm{653}}^1\times {\mathrm{6217}}^1$

素因数の和:6879

約数の個数: 24

約数和(自身を含む): 170796024

約数和(自身を除く): 89602004

約数列:

[1, 2, 4, 5, 10, 20, 653, 1306, 2612, 3265, 6217, 6530, 12434, 13060, 24868, 31085, 62170, 124340, 4059701, 8119402, 16238804, 20298505, 40597010, 81194020]

約数ペア:

[(1, 81194020), (2, 40597010), (4, 20298505), (5, 16238804), (10, 8119402), (20, 4059701), (653, 124340), (1306, 62170), (2612, 31085), (3265, 24868), (6217, 13060), (6530, 12434)]