20421424

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{211}}^1\times {\mathrm{263}}^1$

素因数の和:505

約数の個数: 40

約数和(自身を含む): 41640192

約数和(自身を除く): 21218768

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 184, 211, 263, 368, 422, 526, 844, 1052, 1688, 2104, 3376, 4208, 4853, 6049, 9706, 12098, 19412, 24196, 38824, 48392, 55493, 77648, 96784, 110986, 221972, 443944, 887888, 1276339, 2552678, 5105356, 10210712, 20421424]

約数ペア:

[(1, 20421424), (2, 10210712), (4, 5105356), (8, 2552678), (16, 1276339), (23, 887888), (46, 443944), (92, 221972), (184, 110986), (211, 96784), (263, 77648), (368, 55493), (422, 48392), (526, 38824), (844, 24196), (1052, 19412), (1688, 12098), (2104, 9706), (3376, 6049), (4208, 4853)]