16871980

素因数分解:

$2^2\times 5^1\times {\mathrm{523}}^1\times {\mathrm{1613}}^1$

素因数の和:2145

約数の個数: 24

約数和(自身を含む): 35520912

約数和(自身を除く): 18648932

約数列:

[1, 2, 4, 5, 10, 20, 523, 1046, 1613, 2092, 2615, 3226, 5230, 6452, 8065, 10460, 16130, 32260, 843599, 1687198, 3374396, 4217995, 8435990, 16871980]

約数ペア:

[(1, 16871980), (2, 8435990), (4, 4217995), (5, 3374396), (10, 1687198), (20, 843599), (523, 32260), (1046, 16130), (1613, 10460), (2092, 8065), (2615, 6452), (3226, 5230)]