21289920

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{331}}^1$

素因数の和:418

約数の個数: 112

約数和(自身を含む): 68811648

約数和(自身を除く): 47521728

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 67, 80, 96, 120, 134, 160, 192, 201, 240, 268, 320, 331, 335, 402, 480, 536, 662, 670, 804, 960, 993, 1005, 1072, 1324, 1340, 1608, 1655, 1986, 2010, 2144, 2648, 2680, 3216, 3310, 3972, 4020, 4288, 4965, 5296, 5360, 6432, 6620, 7944, 8040, 9930, 10592, 10720, 12864, 13240, 15888, 16080, 19860, 21184, 21440, 22177, 26480, 31776, 32160, 39720, 44354, 52960, 63552, 64320, 66531, 79440, 88708, 105920, 110885, 133062, 158880, 177416, 221770, 266124, 317760, 332655, 354832, 443540, 532248, 665310, 709664, 887080, 1064496, 1330620, 1419328, 1774160, 2128992, 2661240, 3548320, 4257984, 5322480, 7096640, 10644960, 21289920]

約数ペア:

[(1, 21289920), (2, 10644960), (3, 7096640), (4, 5322480), (5, 4257984), (6, 3548320), (8, 2661240), (10, 2128992), (12, 1774160), (15, 1419328), (16, 1330620), (20, 1064496), (24, 887080), (30, 709664), (32, 665310), (40, 532248), (48, 443540), (60, 354832), (64, 332655), (67, 317760), (80, 266124), (96, 221770), (120, 177416), (134, 158880), (160, 133062), (192, 110885), (201, 105920), (240, 88708), (268, 79440), (320, 66531), (331, 64320), (335, 63552), (402, 52960), (480, 44354), (536, 39720), (662, 32160), (670, 31776), (804, 26480), (960, 22177), (993, 21440), (1005, 21184), (1072, 19860), (1324, 16080), (1340, 15888), (1608, 13240), (1655, 12864), (1986, 10720), (2010, 10592), (2144, 9930), (2648, 8040), (2680, 7944), (3216, 6620), (3310, 6432), (3972, 5360), (4020, 5296), (4288, 4965)]