399184420

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{688249}}^1$

素因数の和:688287

約数の個数: 24

約数和(自身を含む): 867195000

約数和(自身を除く): 468010580

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 688249, 1376498, 2752996, 3441245, 6882490, 13764980, 19959221, 39918442, 79836884, 99796105, 199592210, 399184420]

約数ペア:

[(1, 399184420), (2, 199592210), (4, 99796105), (5, 79836884), (10, 39918442), (20, 19959221), (29, 13764980), (58, 6882490), (116, 3441245), (145, 2752996), (290, 1376498), (580, 688249)]