12731920

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{2609}}^1$

素因数の和:2683

約数の個数: 40

約数和(自身を含む): 30098520

約数和(自身を除く): 17366600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 2609, 4880, 5218, 10436, 13045, 20872, 26090, 41744, 52180, 104360, 159149, 208720, 318298, 636596, 795745, 1273192, 1591490, 2546384, 3182980, 6365960, 12731920]

約数ペア:

[(1, 12731920), (2, 6365960), (4, 3182980), (5, 2546384), (8, 1591490), (10, 1273192), (16, 795745), (20, 636596), (40, 318298), (61, 208720), (80, 159149), (122, 104360), (244, 52180), (305, 41744), (488, 26090), (610, 20872), (976, 13045), (1220, 10436), (2440, 5218), (2609, 4880)]