20406240

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{383}}^1$

素因数の和:441

約数の個数: 144

約数和(自身を含む): 71705088

約数和(自身を除く): 51298848

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 37, 40, 45, 48, 60, 72, 74, 80, 90, 96, 111, 120, 144, 148, 160, 180, 185, 222, 240, 288, 296, 333, 360, 370, 383, 444, 480, 555, 592, 666, 720, 740, 766, 888, 1110, 1149, 1184, 1332, 1440, 1480, 1532, 1665, 1776, 1915, 2220, 2298, 2664, 2960, 3064, 3330, 3447, 3552, 3830, 4440, 4596, 5328, 5745, 5920, 6128, 6660, 6894, 7660, 8880, 9192, 10656, 11490, 12256, 13320, 13788, 14171, 15320, 17235, 17760, 18384, 22980, 26640, 27576, 28342, 30640, 34470, 36768, 42513, 45960, 53280, 55152, 56684, 61280, 68940, 70855, 85026, 91920, 110304, 113368, 127539, 137880, 141710, 170052, 183840, 212565, 226736, 255078, 275760, 283420, 340104, 425130, 453472, 510156, 551520, 566840, 637695, 680208, 850260, 1020312, 1133680, 1275390, 1360416, 1700520, 2040624, 2267360, 2550780, 3401040, 4081248, 5101560, 6802080, 10203120, 20406240]

約数ペア:

[(1, 20406240), (2, 10203120), (3, 6802080), (4, 5101560), (5, 4081248), (6, 3401040), (8, 2550780), (9, 2267360), (10, 2040624), (12, 1700520), (15, 1360416), (16, 1275390), (18, 1133680), (20, 1020312), (24, 850260), (30, 680208), (32, 637695), (36, 566840), (37, 551520), (40, 510156), (45, 453472), (48, 425130), (60, 340104), (72, 283420), (74, 275760), (80, 255078), (90, 226736), (96, 212565), (111, 183840), (120, 170052), (144, 141710), (148, 137880), (160, 127539), (180, 113368), (185, 110304), (222, 91920), (240, 85026), (288, 70855), (296, 68940), (333, 61280), (360, 56684), (370, 55152), (383, 53280), (444, 45960), (480, 42513), (555, 36768), (592, 34470), (666, 30640), (720, 28342), (740, 27576), (766, 26640), (888, 22980), (1110, 18384), (1149, 17760), (1184, 17235), (1332, 15320), (1440, 14171), (1480, 13788), (1532, 13320), (1665, 12256), (1776, 11490), (1915, 10656), (2220, 9192), (2298, 8880), (2664, 7660), (2960, 6894), (3064, 6660), (3330, 6128), (3447, 5920), (3552, 5745), (3830, 5328), (4440, 4596)]