21000508790

素因数分解:

$2^1\times 5^1\times {\mathrm{172093}}^1\times {\mathrm{12203}}^1$

素因数の和:184303

約数の個数: 16

約数和(自身を含む): 37804233168

約数和(自身を除く): 16803724378

約数列:

[1, 2, 5, 10, 12203, 24406, 61015, 122030, 172093, 344186, 860465, 1720930, 2100050879, 4200101758, 10500254395, 21000508790]

約数ペア:

[(1, 21000508790), (2, 10500254395), (5, 4200101758), (10, 2100050879), (12203, 1720930), (24406, 860465), (61015, 344186), (122030, 172093)]