21997184

素因数分解:

$2^7\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{919}}^1$

素因数の和:961

約数の個数: 64

約数和(自身を含む): 50673600

約数和(自身を除く): 28676416

約数列:

[1, 2, 4, 8, 11, 16, 17, 22, 32, 34, 44, 64, 68, 88, 128, 136, 176, 187, 272, 352, 374, 544, 704, 748, 919, 1088, 1408, 1496, 1838, 2176, 2992, 3676, 5984, 7352, 10109, 11968, 14704, 15623, 20218, 23936, 29408, 31246, 40436, 58816, 62492, 80872, 117632, 124984, 161744, 171853, 249968, 323488, 343706, 499936, 646976, 687412, 999872, 1293952, 1374824, 1999744, 2749648, 5499296, 10998592, 21997184]

約数ペア:

[(1, 21997184), (2, 10998592), (4, 5499296), (8, 2749648), (11, 1999744), (16, 1374824), (17, 1293952), (22, 999872), (32, 687412), (34, 646976), (44, 499936), (64, 343706), (68, 323488), (88, 249968), (128, 171853), (136, 161744), (176, 124984), (187, 117632), (272, 80872), (352, 62492), (374, 58816), (544, 40436), (704, 31246), (748, 29408), (919, 23936), (1088, 20218), (1408, 15623), (1496, 14704), (1838, 11968), (2176, 10109), (2992, 7352), (3676, 5984)]