20380990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{12659}}^1$

素因数の和:12696

約数の個数: 32

約数和(自身を含む): 43752960

約数和(自身を除く): 23371970

約数列:

[1, 2, 5, 7, 10, 14, 23, 35, 46, 70, 115, 161, 230, 322, 805, 1610, 12659, 25318, 63295, 88613, 126590, 177226, 291157, 443065, 582314, 886130, 1455785, 2038099, 2911570, 4076198, 10190495, 20380990]

約数ペア:

[(1, 20380990), (2, 10190495), (5, 4076198), (7, 2911570), (10, 2038099), (14, 1455785), (23, 886130), (35, 582314), (46, 443065), (70, 291157), (115, 177226), (161, 126590), (230, 88613), (322, 63295), (805, 25318), (1610, 12659)]