20199950

素因数分解:

$2^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{13931}}^1$

素因数の和:13972

約数の個数: 24

約数和(自身を含む): 38870280

約数和(自身を除く): 18670330

約数列:

[1, 2, 5, 10, 25, 29, 50, 58, 145, 290, 725, 1450, 13931, 27862, 69655, 139310, 348275, 403999, 696550, 807998, 2019995, 4039990, 10099975, 20199950]

約数ペア:

[(1, 20199950), (2, 10099975), (5, 4039990), (10, 2019995), (25, 807998), (29, 696550), (50, 403999), (58, 348275), (145, 139310), (290, 69655), (725, 27862), (1450, 13931)]