18938384

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{971}}^1$

素因数の和:1055

約数の個数: 40

約数和(自身を含む): 39051072

約数和(自身を除く): 20112688

約数列:

[1, 2, 4, 8, 16, 23, 46, 53, 92, 106, 184, 212, 368, 424, 848, 971, 1219, 1942, 2438, 3884, 4876, 7768, 9752, 15536, 19504, 22333, 44666, 51463, 89332, 102926, 178664, 205852, 357328, 411704, 823408, 1183649, 2367298, 4734596, 9469192, 18938384]

約数ペア:

[(1, 18938384), (2, 9469192), (4, 4734596), (8, 2367298), (16, 1183649), (23, 823408), (46, 411704), (53, 357328), (92, 205852), (106, 178664), (184, 102926), (212, 89332), (368, 51463), (424, 44666), (848, 22333), (971, 19504), (1219, 15536), (1942, 9752), (2438, 7768), (3884, 4876)]