90279980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{644857}}^1$

素因数の和:644873

約数の個数: 24

約数和(自身を含む): 216672288

約数和(自身を除く): 126392308

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 644857, 1289714, 2579428, 3224285, 4513999, 6448570, 9027998, 12897140, 18055996, 22569995, 45139990, 90279980]

約数ペア:

[(1, 90279980), (2, 45139990), (4, 22569995), (5, 18055996), (7, 12897140), (10, 9027998), (14, 6448570), (20, 4513999), (28, 3224285), (35, 2579428), (70, 1289714), (140, 644857)]