81765720

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{75709}}^1$

素因数の和:75729

約数の個数: 64

約数和(自身を含む): 272556000

約数和(自身を除く): 190790280

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 90, 108, 120, 135, 180, 216, 270, 360, 540, 1080, 75709, 151418, 227127, 302836, 378545, 454254, 605672, 681381, 757090, 908508, 1135635, 1362762, 1514180, 1817016, 2044143, 2271270, 2725524, 3028360, 3406905, 4088286, 4542540, 5451048, 6813810, 8176572, 9085080, 10220715, 13627620, 16353144, 20441430, 27255240, 40882860, 81765720]

約数ペア:

[(1, 81765720), (2, 40882860), (3, 27255240), (4, 20441430), (5, 16353144), (6, 13627620), (8, 10220715), (9, 9085080), (10, 8176572), (12, 6813810), (15, 5451048), (18, 4542540), (20, 4088286), (24, 3406905), (27, 3028360), (30, 2725524), (36, 2271270), (40, 2044143), (45, 1817016), (54, 1514180), (60, 1362762), (72, 1135635), (90, 908508), (108, 757090), (120, 681381), (135, 605672), (180, 454254), (216, 378545), (270, 302836), (360, 227127), (540, 151418), (1080, 75709)]