20438782

素因数分解:

$2^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{263}}^1$

素因数の和:353

約数の個数: 48

約数和(自身を含む): 39184992

約数和(自身を除く): 18746210

約数列:

[1, 2, 7, 13, 14, 26, 49, 61, 91, 98, 122, 182, 263, 427, 526, 637, 793, 854, 1274, 1586, 1841, 2989, 3419, 3682, 5551, 5978, 6838, 11102, 12887, 16043, 23933, 25774, 32086, 38857, 47866, 77714, 112301, 167531, 208559, 224602, 335062, 417118, 786107, 1459913, 1572214, 2919826, 10219391, 20438782]

約数ペア:

[(1, 20438782), (2, 10219391), (7, 2919826), (13, 1572214), (14, 1459913), (26, 786107), (49, 417118), (61, 335062), (91, 224602), (98, 208559), (122, 167531), (182, 112301), (263, 77714), (427, 47866), (526, 38857), (637, 32086), (793, 25774), (854, 23933), (1274, 16043), (1586, 12887), (1841, 11102), (2989, 6838), (3419, 5978), (3682, 5551)]