20965680

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{787}}^1$

素因数の和:843

約数の個数: 120

約数和(自身を含む): 72404592

約数和(自身を除く): 51438912

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 37, 40, 45, 48, 60, 72, 74, 80, 90, 111, 120, 144, 148, 180, 185, 222, 240, 296, 333, 360, 370, 444, 555, 592, 666, 720, 740, 787, 888, 1110, 1332, 1480, 1574, 1665, 1776, 2220, 2361, 2664, 2960, 3148, 3330, 3935, 4440, 4722, 5328, 6296, 6660, 7083, 7870, 8880, 9444, 11805, 12592, 13320, 14166, 15740, 18888, 23610, 26640, 28332, 29119, 31480, 35415, 37776, 47220, 56664, 58238, 62960, 70830, 87357, 94440, 113328, 116476, 141660, 145595, 174714, 188880, 232952, 262071, 283320, 291190, 349428, 436785, 465904, 524142, 566640, 582380, 698856, 873570, 1048284, 1164760, 1310355, 1397712, 1747140, 2096568, 2329520, 2620710, 3494280, 4193136, 5241420, 6988560, 10482840, 20965680]

約数ペア:

[(1, 20965680), (2, 10482840), (3, 6988560), (4, 5241420), (5, 4193136), (6, 3494280), (8, 2620710), (9, 2329520), (10, 2096568), (12, 1747140), (15, 1397712), (16, 1310355), (18, 1164760), (20, 1048284), (24, 873570), (30, 698856), (36, 582380), (37, 566640), (40, 524142), (45, 465904), (48, 436785), (60, 349428), (72, 291190), (74, 283320), (80, 262071), (90, 232952), (111, 188880), (120, 174714), (144, 145595), (148, 141660), (180, 116476), (185, 113328), (222, 94440), (240, 87357), (296, 70830), (333, 62960), (360, 58238), (370, 56664), (444, 47220), (555, 37776), (592, 35415), (666, 31480), (720, 29119), (740, 28332), (787, 26640), (888, 23610), (1110, 18888), (1332, 15740), (1480, 14166), (1574, 13320), (1665, 12592), (1776, 11805), (2220, 9444), (2361, 8880), (2664, 7870), (2960, 7083), (3148, 6660), (3330, 6296), (3935, 5328), (4440, 4722)]