21248864

素因数分解:

$2^5\times 7^1\times {\mathrm{13}}^1\times {\mathrm{7297}}^1$

素因数の和:7327

約数の個数: 48

約数和(自身を含む): 51494688

約数和(自身を除く): 30245824

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 91, 104, 112, 182, 208, 224, 364, 416, 728, 1456, 2912, 7297, 14594, 29188, 51079, 58376, 94861, 102158, 116752, 189722, 204316, 233504, 379444, 408632, 664027, 758888, 817264, 1328054, 1517776, 1634528, 2656108, 3035552, 5312216, 10624432, 21248864]

約数ペア:

[(1, 21248864), (2, 10624432), (4, 5312216), (7, 3035552), (8, 2656108), (13, 1634528), (14, 1517776), (16, 1328054), (26, 817264), (28, 758888), (32, 664027), (52, 408632), (56, 379444), (91, 233504), (104, 204316), (112, 189722), (182, 116752), (208, 102158), (224, 94861), (364, 58376), (416, 51079), (728, 29188), (1456, 14594), (2912, 7297)]