21656640

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1327}}^1$

素因数の和:1364

約数の個数: 112

約数和(自身を含む): 72859392

約数和(自身を除く): 51202752

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 32, 34, 40, 48, 51, 60, 64, 68, 80, 85, 96, 102, 120, 136, 160, 170, 192, 204, 240, 255, 272, 320, 340, 408, 480, 510, 544, 680, 816, 960, 1020, 1088, 1327, 1360, 1632, 2040, 2654, 2720, 3264, 3981, 4080, 5308, 5440, 6635, 7962, 8160, 10616, 13270, 15924, 16320, 19905, 21232, 22559, 26540, 31848, 39810, 42464, 45118, 53080, 63696, 67677, 79620, 84928, 90236, 106160, 112795, 127392, 135354, 159240, 180472, 212320, 225590, 254784, 270708, 318480, 338385, 360944, 424640, 451180, 541416, 636960, 676770, 721888, 902360, 1082832, 1273920, 1353540, 1443776, 1804720, 2165664, 2707080, 3609440, 4331328, 5414160, 7218880, 10828320, 21656640]

約数ペア:

[(1, 21656640), (2, 10828320), (3, 7218880), (4, 5414160), (5, 4331328), (6, 3609440), (8, 2707080), (10, 2165664), (12, 1804720), (15, 1443776), (16, 1353540), (17, 1273920), (20, 1082832), (24, 902360), (30, 721888), (32, 676770), (34, 636960), (40, 541416), (48, 451180), (51, 424640), (60, 360944), (64, 338385), (68, 318480), (80, 270708), (85, 254784), (96, 225590), (102, 212320), (120, 180472), (136, 159240), (160, 135354), (170, 127392), (192, 112795), (204, 106160), (240, 90236), (255, 84928), (272, 79620), (320, 67677), (340, 63696), (408, 53080), (480, 45118), (510, 42464), (544, 39810), (680, 31848), (816, 26540), (960, 22559), (1020, 21232), (1088, 19905), (1327, 16320), (1360, 15924), (1632, 13270), (2040, 10616), (2654, 8160), (2720, 7962), (3264, 6635), (3981, 5440), (4080, 5308)]