81561376

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{607}}^1$

素因数の和:666

約数の個数: 96

約数和(自身を含む): 193052160

約数和(自身を除く): 111490784

約数列:

[1, 2, 4, 8, 13, 16, 17, 19, 26, 32, 34, 38, 52, 68, 76, 104, 136, 152, 208, 221, 247, 272, 304, 323, 416, 442, 494, 544, 607, 608, 646, 884, 988, 1214, 1292, 1768, 1976, 2428, 2584, 3536, 3952, 4199, 4856, 5168, 7072, 7891, 7904, 8398, 9712, 10319, 10336, 11533, 15782, 16796, 19424, 20638, 23066, 31564, 33592, 41276, 46132, 63128, 67184, 82552, 92264, 126256, 134147, 134368, 149929, 165104, 184528, 196061, 252512, 268294, 299858, 330208, 369056, 392122, 536588, 599716, 784244, 1073176, 1199432, 1568488, 2146352, 2398864, 2548793, 3136976, 4292704, 4797728, 5097586, 6273952, 10195172, 20390344, 40780688, 81561376]

約数ペア:

[(1, 81561376), (2, 40780688), (4, 20390344), (8, 10195172), (13, 6273952), (16, 5097586), (17, 4797728), (19, 4292704), (26, 3136976), (32, 2548793), (34, 2398864), (38, 2146352), (52, 1568488), (68, 1199432), (76, 1073176), (104, 784244), (136, 599716), (152, 536588), (208, 392122), (221, 369056), (247, 330208), (272, 299858), (304, 268294), (323, 252512), (416, 196061), (442, 184528), (494, 165104), (544, 149929), (607, 134368), (608, 134147), (646, 126256), (884, 92264), (988, 82552), (1214, 67184), (1292, 63128), (1768, 46132), (1976, 41276), (2428, 33592), (2584, 31564), (3536, 23066), (3952, 20638), (4199, 19424), (4856, 16796), (5168, 15782), (7072, 11533), (7891, 10336), (7904, 10319), (8398, 9712)]