18917312

素因数分解:

$2^6\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{331}}^1$

素因数の和:409

約数の個数: 56

約数和(自身を含む): 40477440

約数和(自身を除く): 21560128

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 47, 64, 76, 94, 152, 188, 304, 331, 376, 608, 662, 752, 893, 1216, 1324, 1504, 1786, 2648, 3008, 3572, 5296, 6289, 7144, 10592, 12578, 14288, 15557, 21184, 25156, 28576, 31114, 50312, 57152, 62228, 100624, 124456, 201248, 248912, 295583, 402496, 497824, 591166, 995648, 1182332, 2364664, 4729328, 9458656, 18917312]

約数ペア:

[(1, 18917312), (2, 9458656), (4, 4729328), (8, 2364664), (16, 1182332), (19, 995648), (32, 591166), (38, 497824), (47, 402496), (64, 295583), (76, 248912), (94, 201248), (152, 124456), (188, 100624), (304, 62228), (331, 57152), (376, 50312), (608, 31114), (662, 28576), (752, 25156), (893, 21184), (1216, 15557), (1324, 14288), (1504, 12578), (1786, 10592), (2648, 7144), (3008, 6289), (3572, 5296)]