21215050

素因数分解:

$2^1\times 5^2\times {\mathrm{101}}^1\times {\mathrm{4201}}^1$

素因数の和:4314

約数の個数: 24

約数和(自身を含む): 39860172

約数和(自身を除く): 18645122

約数列:

[1, 2, 5, 10, 25, 50, 101, 202, 505, 1010, 2525, 4201, 5050, 8402, 21005, 42010, 105025, 210050, 424301, 848602, 2121505, 4243010, 10607525, 21215050]

約数ペア:

[(1, 21215050), (2, 10607525), (5, 4243010), (10, 2121505), (25, 848602), (50, 424301), (101, 210050), (202, 105025), (505, 42010), (1010, 21005), (2525, 8402), (4201, 5050)]