20961000

素因数分解:

$2^3\times 3^2\times 5^3\times {\mathrm{17}}^1\times {\mathrm{137}}^1$

素因数の和:181

約数の個数: 192

約数和(自身を含む): 75563280

約数和(自身を除く): 54602280

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 17, 18, 20, 24, 25, 30, 34, 36, 40, 45, 50, 51, 60, 68, 72, 75, 85, 90, 100, 102, 120, 125, 136, 137, 150, 153, 170, 180, 200, 204, 225, 250, 255, 274, 300, 306, 340, 360, 375, 408, 411, 425, 450, 500, 510, 548, 600, 612, 680, 685, 750, 765, 822, 850, 900, 1000, 1020, 1096, 1125, 1224, 1233, 1275, 1370, 1500, 1530, 1644, 1700, 1800, 2040, 2055, 2125, 2250, 2329, 2466, 2550, 2740, 3000, 3060, 3288, 3400, 3425, 3825, 4110, 4250, 4500, 4658, 4932, 5100, 5480, 6120, 6165, 6375, 6850, 6987, 7650, 8220, 8500, 9000, 9316, 9864, 10200, 10275, 11645, 12330, 12750, 13700, 13974, 15300, 16440, 17000, 17125, 18632, 19125, 20550, 20961, 23290, 24660, 25500, 27400, 27948, 30600, 30825, 34250, 34935, 38250, 41100, 41922, 46580, 49320, 51000, 51375, 55896, 58225, 61650, 68500, 69870, 76500, 82200, 83844, 93160, 102750, 104805, 116450, 123300, 137000, 139740, 153000, 154125, 167688, 174675, 205500, 209610, 232900, 246600, 279480, 291125, 308250, 349350, 411000, 419220, 465800, 524025, 582250, 616500, 698700, 838440, 873375, 1048050, 1164500, 1233000, 1397400, 1746750, 2096100, 2329000, 2620125, 3493500, 4192200, 5240250, 6987000, 10480500, 20961000]

約数ペア:

[(1, 20961000), (2, 10480500), (3, 6987000), (4, 5240250), (5, 4192200), (6, 3493500), (8, 2620125), (9, 2329000), (10, 2096100), (12, 1746750), (15, 1397400), (17, 1233000), (18, 1164500), (20, 1048050), (24, 873375), (25, 838440), (30, 698700), (34, 616500), (36, 582250), (40, 524025), (45, 465800), (50, 419220), (51, 411000), (60, 349350), (68, 308250), (72, 291125), (75, 279480), (85, 246600), (90, 232900), (100, 209610), (102, 205500), (120, 174675), (125, 167688), (136, 154125), (137, 153000), (150, 139740), (153, 137000), (170, 123300), (180, 116450), (200, 104805), (204, 102750), (225, 93160), (250, 83844), (255, 82200), (274, 76500), (300, 69870), (306, 68500), (340, 61650), (360, 58225), (375, 55896), (408, 51375), (411, 51000), (425, 49320), (450, 46580), (500, 41922), (510, 41100), (548, 38250), (600, 34935), (612, 34250), (680, 30825), (685, 30600), (750, 27948), (765, 27400), (822, 25500), (850, 24660), (900, 23290), (1000, 20961), (1020, 20550), (1096, 19125), (1125, 18632), (1224, 17125), (1233, 17000), (1275, 16440), (1370, 15300), (1500, 13974), (1530, 13700), (1644, 12750), (1700, 12330), (1800, 11645), (2040, 10275), (2055, 10200), (2125, 9864), (2250, 9316), (2329, 9000), (2466, 8500), (2550, 8220), (2740, 7650), (3000, 6987), (3060, 6850), (3288, 6375), (3400, 6165), (3425, 6120), (3825, 5480), (4110, 5100), (4250, 4932), (4500, 4658)]