21591590

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1\times {\mathrm{337}}^1$

素因数の和:536

約数の個数: 32

約数和(自身を含む): 40154400

約数和(自身を除く): 18562810

約数列:

[1, 2, 5, 10, 43, 86, 149, 215, 298, 337, 430, 674, 745, 1490, 1685, 3370, 6407, 12814, 14491, 28982, 32035, 50213, 64070, 72455, 100426, 144910, 251065, 502130, 2159159, 4318318, 10795795, 21591590]

約数ペア:

[(1, 21591590), (2, 10795795), (5, 4318318), (10, 2159159), (43, 502130), (86, 251065), (149, 144910), (215, 100426), (298, 72455), (337, 64070), (430, 50213), (674, 32035), (745, 28982), (1490, 14491), (1685, 12814), (3370, 6407)]