21581432

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{1783}}^1$

素因数の和:1895

約数の個数: 32

約数和(自身を含む): 43351200

約数和(自身を除く): 21769768

約数列:

[1, 2, 4, 8, 17, 34, 68, 89, 136, 178, 356, 712, 1513, 1783, 3026, 3566, 6052, 7132, 12104, 14264, 30311, 60622, 121244, 158687, 242488, 317374, 634748, 1269496, 2697679, 5395358, 10790716, 21581432]

約数ペア:

[(1, 21581432), (2, 10790716), (4, 5395358), (8, 2697679), (17, 1269496), (34, 634748), (68, 317374), (89, 242488), (136, 158687), (178, 121244), (356, 60622), (712, 30311), (1513, 14264), (1783, 12104), (3026, 7132), (3566, 6052)]