21453984

素因数分解:

$2^5\times 3^5\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:145

約数の個数: 144

約数和(自身を含む): 66044160

約数和(自身を除く): 44590176

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 31, 32, 36, 48, 54, 62, 72, 81, 89, 93, 96, 108, 124, 144, 162, 178, 186, 216, 243, 248, 267, 279, 288, 324, 356, 372, 432, 486, 496, 534, 558, 648, 712, 744, 801, 837, 864, 972, 992, 1068, 1116, 1296, 1424, 1488, 1602, 1674, 1944, 2136, 2232, 2403, 2511, 2592, 2759, 2848, 2976, 3204, 3348, 3888, 4272, 4464, 4806, 5022, 5518, 6408, 6696, 7209, 7533, 7776, 8277, 8544, 8928, 9612, 10044, 11036, 12816, 13392, 14418, 15066, 16554, 19224, 20088, 21627, 22072, 24831, 25632, 26784, 28836, 30132, 33108, 38448, 40176, 43254, 44144, 49662, 57672, 60264, 66216, 74493, 76896, 80352, 86508, 88288, 99324, 115344, 120528, 132432, 148986, 173016, 198648, 223479, 230688, 241056, 264864, 297972, 346032, 397296, 446958, 595944, 670437, 692064, 794592, 893916, 1191888, 1340874, 1787832, 2383776, 2681748, 3575664, 5363496, 7151328, 10726992, 21453984]

約数ペア:

[(1, 21453984), (2, 10726992), (3, 7151328), (4, 5363496), (6, 3575664), (8, 2681748), (9, 2383776), (12, 1787832), (16, 1340874), (18, 1191888), (24, 893916), (27, 794592), (31, 692064), (32, 670437), (36, 595944), (48, 446958), (54, 397296), (62, 346032), (72, 297972), (81, 264864), (89, 241056), (93, 230688), (96, 223479), (108, 198648), (124, 173016), (144, 148986), (162, 132432), (178, 120528), (186, 115344), (216, 99324), (243, 88288), (248, 86508), (267, 80352), (279, 76896), (288, 74493), (324, 66216), (356, 60264), (372, 57672), (432, 49662), (486, 44144), (496, 43254), (534, 40176), (558, 38448), (648, 33108), (712, 30132), (744, 28836), (801, 26784), (837, 25632), (864, 24831), (972, 22072), (992, 21627), (1068, 20088), (1116, 19224), (1296, 16554), (1424, 15066), (1488, 14418), (1602, 13392), (1674, 12816), (1944, 11036), (2136, 10044), (2232, 9612), (2403, 8928), (2511, 8544), (2592, 8277), (2759, 7776), (2848, 7533), (2976, 7209), (3204, 6696), (3348, 6408), (3888, 5518), (4272, 5022), (4464, 4806)]