19688864

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1$

素因数の和:142

約数の個数: 96

約数和(自身を含む): 45722880

約数和(自身を除く): 26034016

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 32, 38, 47, 52, 53, 76, 94, 104, 106, 152, 188, 208, 212, 247, 304, 376, 416, 424, 494, 608, 611, 689, 752, 848, 893, 988, 1007, 1222, 1378, 1504, 1696, 1786, 1976, 2014, 2444, 2491, 2756, 3572, 3952, 4028, 4888, 4982, 5512, 7144, 7904, 8056, 9776, 9964, 11024, 11609, 13091, 14288, 16112, 19552, 19928, 22048, 23218, 26182, 28576, 32224, 32383, 39856, 46436, 47329, 52364, 64766, 79712, 92872, 94658, 104728, 129532, 185744, 189316, 209456, 259064, 371488, 378632, 418912, 518128, 615277, 757264, 1036256, 1230554, 1514528, 2461108, 4922216, 9844432, 19688864]

約数ペア:

[(1, 19688864), (2, 9844432), (4, 4922216), (8, 2461108), (13, 1514528), (16, 1230554), (19, 1036256), (26, 757264), (32, 615277), (38, 518128), (47, 418912), (52, 378632), (53, 371488), (76, 259064), (94, 209456), (104, 189316), (106, 185744), (152, 129532), (188, 104728), (208, 94658), (212, 92872), (247, 79712), (304, 64766), (376, 52364), (416, 47329), (424, 46436), (494, 39856), (608, 32383), (611, 32224), (689, 28576), (752, 26182), (848, 23218), (893, 22048), (988, 19928), (1007, 19552), (1222, 16112), (1378, 14288), (1504, 13091), (1696, 11609), (1786, 11024), (1976, 9964), (2014, 9776), (2444, 8056), (2491, 7904), (2756, 7144), (3572, 5512), (3952, 4982), (4028, 4888)]