81408390

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{387659}}^1$

素因数の和:387676

約数の個数: 32

約数和(自身を含む): 223292160

約数和(自身を除く): 141883770

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 387659, 775318, 1162977, 1938295, 2325954, 2713613, 3876590, 5427226, 5814885, 8140839, 11629770, 13568065, 16281678, 27136130, 40704195, 81408390]

約数ペア:

[(1, 81408390), (2, 40704195), (3, 27136130), (5, 16281678), (6, 13568065), (7, 11629770), (10, 8140839), (14, 5814885), (15, 5427226), (21, 3876590), (30, 2713613), (35, 2325954), (42, 1938295), (70, 1162977), (105, 775318), (210, 387659)]