21351960

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{229}}^1$

素因数の和:290

約数の個数: 192

約数和(自身を含む): 81806400

約数和(自身を除く): 60454440

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 37, 40, 42, 45, 56, 60, 63, 70, 72, 74, 84, 90, 105, 111, 120, 126, 140, 148, 168, 180, 185, 210, 222, 229, 252, 259, 280, 296, 315, 333, 360, 370, 420, 444, 458, 504, 518, 555, 630, 666, 687, 740, 777, 840, 888, 916, 1036, 1110, 1145, 1260, 1295, 1332, 1374, 1480, 1554, 1603, 1665, 1832, 2061, 2072, 2220, 2290, 2331, 2520, 2590, 2664, 2748, 3108, 3206, 3330, 3435, 3885, 4122, 4440, 4580, 4662, 4809, 5180, 5496, 6216, 6412, 6660, 6870, 7770, 8015, 8244, 8473, 9160, 9324, 9618, 10305, 10360, 11655, 12824, 13320, 13740, 14427, 15540, 16030, 16488, 16946, 18648, 19236, 20610, 23310, 24045, 25419, 27480, 28854, 31080, 32060, 33892, 38472, 41220, 42365, 46620, 48090, 50838, 57708, 59311, 64120, 67784, 72135, 76257, 82440, 84730, 93240, 96180, 101676, 115416, 118622, 127095, 144270, 152514, 169460, 177933, 192360, 203352, 237244, 254190, 288540, 296555, 305028, 338920, 355866, 381285, 474488, 508380, 533799, 577080, 593110, 610056, 711732, 762570, 889665, 1016760, 1067598, 1186220, 1423464, 1525140, 1779330, 2135196, 2372440, 2668995, 3050280, 3558660, 4270392, 5337990, 7117320, 10675980, 21351960]

約数ペア:

[(1, 21351960), (2, 10675980), (3, 7117320), (4, 5337990), (5, 4270392), (6, 3558660), (7, 3050280), (8, 2668995), (9, 2372440), (10, 2135196), (12, 1779330), (14, 1525140), (15, 1423464), (18, 1186220), (20, 1067598), (21, 1016760), (24, 889665), (28, 762570), (30, 711732), (35, 610056), (36, 593110), (37, 577080), (40, 533799), (42, 508380), (45, 474488), (56, 381285), (60, 355866), (63, 338920), (70, 305028), (72, 296555), (74, 288540), (84, 254190), (90, 237244), (105, 203352), (111, 192360), (120, 177933), (126, 169460), (140, 152514), (148, 144270), (168, 127095), (180, 118622), (185, 115416), (210, 101676), (222, 96180), (229, 93240), (252, 84730), (259, 82440), (280, 76257), (296, 72135), (315, 67784), (333, 64120), (360, 59311), (370, 57708), (420, 50838), (444, 48090), (458, 46620), (504, 42365), (518, 41220), (555, 38472), (630, 33892), (666, 32060), (687, 31080), (740, 28854), (777, 27480), (840, 25419), (888, 24045), (916, 23310), (1036, 20610), (1110, 19236), (1145, 18648), (1260, 16946), (1295, 16488), (1332, 16030), (1374, 15540), (1480, 14427), (1554, 13740), (1603, 13320), (1665, 12824), (1832, 11655), (2061, 10360), (2072, 10305), (2220, 9618), (2290, 9324), (2331, 9160), (2520, 8473), (2590, 8244), (2664, 8015), (2748, 7770), (3108, 6870), (3206, 6660), (3330, 6412), (3435, 6216), (3885, 5496), (4122, 5180), (4440, 4809), (4580, 4662)]