21900100

素因数分解:

$2^2\times 5^2\times {\mathrm{219001}}^1$

素因数の和:219015

約数の個数: 18

約数和(自身を含む): 47523434

約数和(自身を除く): 25623334

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 219001, 438002, 876004, 1095005, 2190010, 4380020, 5475025, 10950050, 21900100]

約数ペア:

[(1, 21900100), (2, 10950050), (4, 5475025), (5, 4380020), (10, 2190010), (20, 1095005), (25, 876004), (50, 438002), (100, 219001)]