81270100

素因数分解:

$2^2\times 5^2\times {\mathrm{812701}}^1$

素因数の和:812715

約数の個数: 18

約数和(自身を含む): 176356334

約数和(自身を除く): 95086234

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 812701, 1625402, 3250804, 4063505, 8127010, 16254020, 20317525, 40635050, 81270100]

約数ペア:

[(1, 81270100), (2, 40635050), (4, 20317525), (5, 16254020), (10, 8127010), (20, 4063505), (25, 3250804), (50, 1625402), (100, 812701)]