21978020008

素因数分解:

$2^3\times 7^1\times {\mathrm{263}}^1\times {\mathrm{1492261}}^1$

素因数の和:1492537

約数の個数: 32

約数和(自身を含む): 47274860160

約数和(自身を除く): 25296840152

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 263, 526, 1052, 1841, 2104, 3682, 7364, 14728, 1492261, 2984522, 5969044, 10445827, 11938088, 20891654, 41783308, 83566616, 392464643, 784929286, 1569858572, 2747252501, 3139717144, 5494505002, 10989010004, 21978020008]

約数ペア:

[(1, 21978020008), (2, 10989010004), (4, 5494505002), (7, 3139717144), (8, 2747252501), (14, 1569858572), (28, 784929286), (56, 392464643), (263, 83566616), (526, 41783308), (1052, 20891654), (1841, 11938088), (2104, 10445827), (3682, 5969044), (7364, 2984522), (14728, 1492261)]