20121872

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{54679}}^1$

素因数の和:54710

約数の個数: 20

約数和(自身を含む): 40681920

約数和(自身を除く): 20560048

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 184, 368, 54679, 109358, 218716, 437432, 874864, 1257617, 2515234, 5030468, 10060936, 20121872]

約数ペア:

[(1, 20121872), (2, 10060936), (4, 5030468), (8, 2515234), (16, 1257617), (23, 874864), (46, 437432), (92, 218716), (184, 109358), (368, 54679)]