81512392

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{193}}^1$

素因数の和:374

約数の個数: 64

約数和(自身を含む): 172085760

約数和(自身を除く): 90573368

約数列:

[1, 2, 4, 8, 13, 26, 31, 52, 62, 104, 124, 131, 193, 248, 262, 386, 403, 524, 772, 806, 1048, 1544, 1612, 1703, 2509, 3224, 3406, 4061, 5018, 5983, 6812, 8122, 10036, 11966, 13624, 16244, 20072, 23932, 25283, 32488, 47864, 50566, 52793, 77779, 101132, 105586, 155558, 202264, 211172, 311116, 328679, 422344, 622232, 657358, 783773, 1314716, 1567546, 2629432, 3135092, 6270184, 10189049, 20378098, 40756196, 81512392]

約数ペア:

[(1, 81512392), (2, 40756196), (4, 20378098), (8, 10189049), (13, 6270184), (26, 3135092), (31, 2629432), (52, 1567546), (62, 1314716), (104, 783773), (124, 657358), (131, 622232), (193, 422344), (248, 328679), (262, 311116), (386, 211172), (403, 202264), (524, 155558), (772, 105586), (806, 101132), (1048, 77779), (1544, 52793), (1612, 50566), (1703, 47864), (2509, 32488), (3224, 25283), (3406, 23932), (4061, 20072), (5018, 16244), (5983, 13624), (6812, 11966), (8122, 10036)]