81396770

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{3889}}^1$

素因数の和:3939

約数の個数: 64

約数和(自身を含む): 188213760

約数和(自身を除く): 106816990

約数列:

[1, 2, 5, 7, 10, 13, 14, 23, 26, 35, 46, 65, 70, 91, 115, 130, 161, 182, 230, 299, 322, 455, 598, 805, 910, 1495, 1610, 2093, 2990, 3889, 4186, 7778, 10465, 19445, 20930, 27223, 38890, 50557, 54446, 89447, 101114, 136115, 178894, 252785, 272230, 353899, 447235, 505570, 626129, 707798, 894470, 1162811, 1252258, 1769495, 2325622, 3130645, 3538990, 5814055, 6261290, 8139677, 11628110, 16279354, 40698385, 81396770]

約数ペア:

[(1, 81396770), (2, 40698385), (5, 16279354), (7, 11628110), (10, 8139677), (13, 6261290), (14, 5814055), (23, 3538990), (26, 3130645), (35, 2325622), (46, 1769495), (65, 1252258), (70, 1162811), (91, 894470), (115, 707798), (130, 626129), (161, 505570), (182, 447235), (230, 353899), (299, 272230), (322, 252785), (455, 178894), (598, 136115), (805, 101114), (910, 89447), (1495, 54446), (1610, 50557), (2093, 38890), (2990, 27223), (3889, 20930), (4186, 19445), (7778, 10465)]