20189951990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{155307323}}^1$

素因数の和:155307343

約数の個数: 16

約数和(自身を含む): 39137445648

約数和(自身を除く): 18947493658

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 155307323, 310614646, 776536615, 1553073230, 2018995199, 4037990398, 10094975995, 20189951990]

約数ペア:

[(1, 20189951990), (2, 10094975995), (5, 4037990398), (10, 2018995199), (13, 1553073230), (26, 776536615), (65, 310614646), (130, 155307323)]