21639170

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{309131}}^1$

素因数の和:309145

約数の個数: 16

約数和(自身を含む): 44515008

約数和(自身を除く): 22875838

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 309131, 618262, 1545655, 2163917, 3091310, 4327834, 10819585, 21639170]

約数ペア:

[(1, 21639170), (2, 10819585), (5, 4327834), (7, 3091310), (10, 2163917), (14, 1545655), (35, 618262), (70, 309131)]