81686943920

素因数分解:

$2^4\times 5^1\times {\mathrm{5297}}^1\times {\mathrm{192767}}^1$

素因数の和:198077

約数の個数: 40

約数和(自身を含む): 189958984704

約数和(自身を除く): 108272040784

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 5297, 10594, 21188, 26485, 42376, 52970, 84752, 105940, 192767, 211880, 385534, 423760, 771068, 963835, 1542136, 1927670, 3084272, 3855340, 7710680, 15421360, 1021086799, 2042173598, 4084347196, 5105433995, 8168694392, 10210867990, 16337388784, 20421735980, 40843471960, 81686943920]

約数ペア:

[(1, 81686943920), (2, 40843471960), (4, 20421735980), (5, 16337388784), (8, 10210867990), (10, 8168694392), (16, 5105433995), (20, 4084347196), (40, 2042173598), (80, 1021086799), (5297, 15421360), (10594, 7710680), (21188, 3855340), (26485, 3084272), (42376, 1927670), (52970, 1542136), (84752, 963835), (105940, 771068), (192767, 423760), (211880, 385534)]