21225788

素因数分解:

$2^2\times {\mathrm{89}}^1\times {\mathrm{109}}^1\times {\mathrm{547}}^1$

素因数の和:749

約数の個数: 24

約数和(自身を含む): 37976400

約数和(自身を除く): 16750612

約数列:

[1, 2, 4, 89, 109, 178, 218, 356, 436, 547, 1094, 2188, 9701, 19402, 38804, 48683, 59623, 97366, 119246, 194732, 238492, 5306447, 10612894, 21225788]

約数ペア:

[(1, 21225788), (2, 10612894), (4, 5306447), (89, 238492), (109, 194732), (178, 119246), (218, 97366), (356, 59623), (436, 48683), (547, 38804), (1094, 19402), (2188, 9701)]