20276015

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{257}}^1\times {\mathrm{509}}^1$

素因数の和:802

約数の個数: 16

約数和(自身を含む): 25263360

約数和(自身を除く): 4987345

約数列:

[1, 5, 31, 155, 257, 509, 1285, 2545, 7967, 15779, 39835, 78895, 130813, 654065, 4055203, 20276015]

約数ペア:

[(1, 20276015), (5, 4055203), (31, 654065), (155, 130813), (257, 78895), (509, 39835), (1285, 15779), (2545, 7967)]