21111328

素因数分解:

$2^5\times 7^1\times {\mathrm{79}}^1\times {\mathrm{1193}}^1$

素因数の和:1289

約数の個数: 48

約数和(自身を含む): 48142080

約数和(自身を除く): 27030752

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 79, 112, 158, 224, 316, 553, 632, 1106, 1193, 1264, 2212, 2386, 2528, 4424, 4772, 8351, 8848, 9544, 16702, 17696, 19088, 33404, 38176, 66808, 94247, 133616, 188494, 267232, 376988, 659729, 753976, 1319458, 1507952, 2638916, 3015904, 5277832, 10555664, 21111328]

約数ペア:

[(1, 21111328), (2, 10555664), (4, 5277832), (7, 3015904), (8, 2638916), (14, 1507952), (16, 1319458), (28, 753976), (32, 659729), (56, 376988), (79, 267232), (112, 188494), (158, 133616), (224, 94247), (316, 66808), (553, 38176), (632, 33404), (1106, 19088), (1193, 17696), (1264, 16702), (2212, 9544), (2386, 8848), (2528, 8351), (4424, 4772)]