21372720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1$

素因数の和:187

約数の個数: 160

約数和(自身を含む): 72019200

約数和(自身を除く): 50646480

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 30, 38, 40, 43, 48, 57, 60, 76, 80, 86, 95, 109, 114, 120, 129, 152, 172, 190, 215, 218, 228, 240, 258, 285, 304, 327, 344, 380, 430, 436, 456, 516, 545, 570, 645, 654, 688, 760, 817, 860, 872, 912, 1032, 1090, 1140, 1290, 1308, 1520, 1634, 1635, 1720, 1744, 2064, 2071, 2180, 2280, 2451, 2580, 2616, 3268, 3270, 3440, 4085, 4142, 4360, 4560, 4687, 4902, 5160, 5232, 6213, 6536, 6540, 8170, 8284, 8720, 9374, 9804, 10320, 10355, 12255, 12426, 13072, 13080, 14061, 16340, 16568, 18748, 19608, 20710, 23435, 24510, 24852, 26160, 28122, 31065, 32680, 33136, 37496, 39216, 41420, 46870, 49020, 49704, 56244, 62130, 65360, 70305, 74992, 82840, 89053, 93740, 98040, 99408, 112488, 124260, 140610, 165680, 178106, 187480, 196080, 224976, 248520, 267159, 281220, 356212, 374960, 445265, 497040, 534318, 562440, 712424, 890530, 1068636, 1124880, 1335795, 1424848, 1781060, 2137272, 2671590, 3562120, 4274544, 5343180, 7124240, 10686360, 21372720]

約数ペア:

[(1, 21372720), (2, 10686360), (3, 7124240), (4, 5343180), (5, 4274544), (6, 3562120), (8, 2671590), (10, 2137272), (12, 1781060), (15, 1424848), (16, 1335795), (19, 1124880), (20, 1068636), (24, 890530), (30, 712424), (38, 562440), (40, 534318), (43, 497040), (48, 445265), (57, 374960), (60, 356212), (76, 281220), (80, 267159), (86, 248520), (95, 224976), (109, 196080), (114, 187480), (120, 178106), (129, 165680), (152, 140610), (172, 124260), (190, 112488), (215, 99408), (218, 98040), (228, 93740), (240, 89053), (258, 82840), (285, 74992), (304, 70305), (327, 65360), (344, 62130), (380, 56244), (430, 49704), (436, 49020), (456, 46870), (516, 41420), (545, 39216), (570, 37496), (645, 33136), (654, 32680), (688, 31065), (760, 28122), (817, 26160), (860, 24852), (872, 24510), (912, 23435), (1032, 20710), (1090, 19608), (1140, 18748), (1290, 16568), (1308, 16340), (1520, 14061), (1634, 13080), (1635, 13072), (1720, 12426), (1744, 12255), (2064, 10355), (2071, 10320), (2180, 9804), (2280, 9374), (2451, 8720), (2580, 8284), (2616, 8170), (3268, 6540), (3270, 6536), (3440, 6213), (4085, 5232), (4142, 5160), (4360, 4902), (4560, 4687)]