21418820

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{36929}}^1$

素因数の和:36967

約数の個数: 24

約数和(自身を含む): 46531800

約数和(自身を除く): 25112980

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 36929, 73858, 147716, 184645, 369290, 738580, 1070941, 2141882, 4283764, 5354705, 10709410, 21418820]

約数ペア:

[(1, 21418820), (2, 10709410), (4, 5354705), (5, 4283764), (10, 2141882), (20, 1070941), (29, 738580), (58, 369290), (116, 184645), (145, 147716), (290, 73858), (580, 36929)]