21212500

素因数分解:

$2^2\times 5^5\times {\mathrm{1697}}^1$

素因数の和:1726

約数の個数: 36

約数和(自身を含む): 46426716

約数和(自身を除く): 25214216

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 625, 1250, 1697, 2500, 3125, 3394, 6250, 6788, 8485, 12500, 16970, 33940, 42425, 84850, 169700, 212125, 424250, 848500, 1060625, 2121250, 4242500, 5303125, 10606250, 21212500]

約数ペア:

[(1, 21212500), (2, 10606250), (4, 5303125), (5, 4242500), (10, 2121250), (20, 1060625), (25, 848500), (50, 424250), (100, 212125), (125, 169700), (250, 84850), (500, 42425), (625, 33940), (1250, 16970), (1697, 12500), (2500, 8485), (3125, 6788), (3394, 6250)]