21005152

素因数分解:

$2^5\times 7^1\times {\mathrm{79}}^1\times {\mathrm{1187}}^1$

素因数の和:1283

約数の個数: 48

約数和(自身を含む): 47900160

約数和(自身を除く): 26895008

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 79, 112, 158, 224, 316, 553, 632, 1106, 1187, 1264, 2212, 2374, 2528, 4424, 4748, 8309, 8848, 9496, 16618, 17696, 18992, 33236, 37984, 66472, 93773, 132944, 187546, 265888, 375092, 656411, 750184, 1312822, 1500368, 2625644, 3000736, 5251288, 10502576, 21005152]

約数ペア:

[(1, 21005152), (2, 10502576), (4, 5251288), (7, 3000736), (8, 2625644), (14, 1500368), (16, 1312822), (28, 750184), (32, 656411), (56, 375092), (79, 265888), (112, 187546), (158, 132944), (224, 93773), (316, 66472), (553, 37984), (632, 33236), (1106, 18992), (1187, 17696), (1264, 16618), (2212, 9496), (2374, 8848), (2528, 8309), (4424, 4748)]