20678700

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{229}}^1$

素因数の和:296

約数の個数: 144

約数和(自身を含む): 70273280

約数和(自身を除く): 49594580

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 43, 50, 60, 70, 75, 84, 86, 100, 105, 129, 140, 150, 172, 175, 210, 215, 229, 258, 300, 301, 350, 420, 430, 458, 516, 525, 602, 645, 687, 700, 860, 903, 916, 1050, 1075, 1145, 1204, 1290, 1374, 1505, 1603, 1806, 2100, 2150, 2290, 2580, 2748, 3010, 3206, 3225, 3435, 3612, 4300, 4515, 4580, 4809, 5725, 6020, 6412, 6450, 6870, 7525, 8015, 9030, 9618, 9847, 11450, 12900, 13740, 15050, 16030, 17175, 18060, 19236, 19694, 22575, 22900, 24045, 29541, 30100, 32060, 34350, 39388, 40075, 45150, 48090, 49235, 59082, 68700, 68929, 80150, 90300, 96180, 98470, 118164, 120225, 137858, 147705, 160300, 196940, 206787, 240450, 246175, 275716, 295410, 344645, 413574, 480900, 492350, 590820, 689290, 738525, 827148, 984700, 1033935, 1378580, 1477050, 1723225, 2067870, 2954100, 3446450, 4135740, 5169675, 6892900, 10339350, 20678700]

約数ペア:

[(1, 20678700), (2, 10339350), (3, 6892900), (4, 5169675), (5, 4135740), (6, 3446450), (7, 2954100), (10, 2067870), (12, 1723225), (14, 1477050), (15, 1378580), (20, 1033935), (21, 984700), (25, 827148), (28, 738525), (30, 689290), (35, 590820), (42, 492350), (43, 480900), (50, 413574), (60, 344645), (70, 295410), (75, 275716), (84, 246175), (86, 240450), (100, 206787), (105, 196940), (129, 160300), (140, 147705), (150, 137858), (172, 120225), (175, 118164), (210, 98470), (215, 96180), (229, 90300), (258, 80150), (300, 68929), (301, 68700), (350, 59082), (420, 49235), (430, 48090), (458, 45150), (516, 40075), (525, 39388), (602, 34350), (645, 32060), (687, 30100), (700, 29541), (860, 24045), (903, 22900), (916, 22575), (1050, 19694), (1075, 19236), (1145, 18060), (1204, 17175), (1290, 16030), (1374, 15050), (1505, 13740), (1603, 12900), (1806, 11450), (2100, 9847), (2150, 9618), (2290, 9030), (2580, 8015), (2748, 7525), (3010, 6870), (3206, 6450), (3225, 6412), (3435, 6020), (3612, 5725), (4300, 4809), (4515, 4580)]