21480656

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{151}}^1\times {\mathrm{523}}^1$

素因数の和:699

約数の個数: 40

約数和(自身を含む): 44443584

約数和(自身を除く): 22962928

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 151, 272, 302, 523, 604, 1046, 1208, 2092, 2416, 2567, 4184, 5134, 8368, 8891, 10268, 17782, 20536, 35564, 41072, 71128, 78973, 142256, 157946, 315892, 631784, 1263568, 1342541, 2685082, 5370164, 10740328, 21480656]

約数ペア:

[(1, 21480656), (2, 10740328), (4, 5370164), (8, 2685082), (16, 1342541), (17, 1263568), (34, 631784), (68, 315892), (136, 157946), (151, 142256), (272, 78973), (302, 71128), (523, 41072), (604, 35564), (1046, 20536), (1208, 17782), (2092, 10268), (2416, 8891), (2567, 8368), (4184, 5134)]