2015180720

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{40433}}^1$

素因数の和:40542

約数の個数: 80

約数和(自身を含む): 5414921280

約数和(自身を除く): 3399740560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 89, 112, 140, 178, 280, 356, 445, 560, 623, 712, 890, 1246, 1424, 1780, 2492, 3115, 3560, 4984, 6230, 7120, 9968, 12460, 24920, 40433, 49840, 80866, 161732, 202165, 283031, 323464, 404330, 566062, 646928, 808660, 1132124, 1415155, 1617320, 2264248, 2830310, 3234640, 3598537, 4528496, 5660620, 7197074, 11321240, 14394148, 17992685, 22642480, 25189759, 28788296, 35985370, 50379518, 57576592, 71970740, 100759036, 125948795, 143941480, 201518072, 251897590, 287882960, 403036144, 503795180, 1007590360, 2015180720]

約数ペア:

[(1, 2015180720), (2, 1007590360), (4, 503795180), (5, 403036144), (7, 287882960), (8, 251897590), (10, 201518072), (14, 143941480), (16, 125948795), (20, 100759036), (28, 71970740), (35, 57576592), (40, 50379518), (56, 35985370), (70, 28788296), (80, 25189759), (89, 22642480), (112, 17992685), (140, 14394148), (178, 11321240), (280, 7197074), (356, 5660620), (445, 4528496), (560, 3598537), (623, 3234640), (712, 2830310), (890, 2264248), (1246, 1617320), (1424, 1415155), (1780, 1132124), (2492, 808660), (3115, 646928), (3560, 566062), (4984, 404330), (6230, 323464), (7120, 283031), (9968, 202165), (12460, 161732), (24920, 80866), (40433, 49840)]