646405920

素因数分解:

$2^5\times 3^4\times 5^1\times {\mathrm{49877}}^1$

素因数の和:49904

約数の個数: 120

約数和(自身を含む): 2281319964

約数和(自身を除く): 1634914044

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 72, 80, 81, 90, 96, 108, 120, 135, 144, 160, 162, 180, 216, 240, 270, 288, 324, 360, 405, 432, 480, 540, 648, 720, 810, 864, 1080, 1296, 1440, 1620, 2160, 2592, 3240, 4320, 6480, 12960, 49877, 99754, 149631, 199508, 249385, 299262, 399016, 448893, 498770, 598524, 748155, 798032, 897786, 997540, 1197048, 1346679, 1496310, 1596064, 1795572, 1995080, 2244465, 2394096, 2693358, 2992620, 3591144, 3990160, 4040037, 4488930, 4788192, 5386716, 5985240, 6733395, 7182288, 7980320, 8080074, 8977860, 10773432, 11970480, 13466790, 14364576, 16160148, 17955720, 20200185, 21546864, 23940960, 26933580, 32320296, 35911440, 40400370, 43093728, 53867160, 64640592, 71822880, 80800740, 107734320, 129281184, 161601480, 215468640, 323202960, 646405920]

約数ペア:

[(1, 646405920), (2, 323202960), (3, 215468640), (4, 161601480), (5, 129281184), (6, 107734320), (8, 80800740), (9, 71822880), (10, 64640592), (12, 53867160), (15, 43093728), (16, 40400370), (18, 35911440), (20, 32320296), (24, 26933580), (27, 23940960), (30, 21546864), (32, 20200185), (36, 17955720), (40, 16160148), (45, 14364576), (48, 13466790), (54, 11970480), (60, 10773432), (72, 8977860), (80, 8080074), (81, 7980320), (90, 7182288), (96, 6733395), (108, 5985240), (120, 5386716), (135, 4788192), (144, 4488930), (160, 4040037), (162, 3990160), (180, 3591144), (216, 2992620), (240, 2693358), (270, 2394096), (288, 2244465), (324, 1995080), (360, 1795572), (405, 1596064), (432, 1496310), (480, 1346679), (540, 1197048), (648, 997540), (720, 897786), (810, 798032), (864, 748155), (1080, 598524), (1296, 498770), (1440, 448893), (1620, 399016), (2160, 299262), (2592, 249385), (3240, 199508), (4320, 149631), (6480, 99754), (12960, 49877)]