21106983

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1$

素因数の和:231

約数の個数: 32

約数和(自身を含む): 30643200

約数和(自身を除く): 9536217

約数列:

[1, 3, 29, 37, 79, 83, 87, 111, 237, 249, 1073, 2291, 2407, 2923, 3071, 3219, 6557, 6873, 7221, 8769, 9213, 19671, 84767, 89059, 190153, 242609, 254301, 267177, 570459, 727827, 7035661, 21106983]

約数ペア:

[(1, 21106983), (3, 7035661), (29, 727827), (37, 570459), (79, 267177), (83, 254301), (87, 242609), (111, 190153), (237, 89059), (249, 84767), (1073, 19671), (2291, 9213), (2407, 8769), (2923, 7221), (3071, 6873), (3219, 6557)]