20998888

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{877}}^1$

素因数の和:997

約数の個数: 32

約数和(自身を含む): 40932360

約数和(自身を除く): 19933472

約数列:

[1, 2, 4, 8, 41, 73, 82, 146, 164, 292, 328, 584, 877, 1754, 2993, 3508, 5986, 7016, 11972, 23944, 35957, 64021, 71914, 128042, 143828, 256084, 287656, 512168, 2624861, 5249722, 10499444, 20998888]

約数ペア:

[(1, 20998888), (2, 10499444), (4, 5249722), (8, 2624861), (41, 512168), (73, 287656), (82, 256084), (146, 143828), (164, 128042), (292, 71914), (328, 64021), (584, 35957), (877, 23944), (1754, 11972), (2993, 7016), (3508, 5986)]