21874816

素因数分解:

$2^7\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{83}}^1$

素因数の和:197

約数の個数: 64

約数和(自身を含む): 46267200

約数和(自身を除く): 24392384

約数列:

[1, 2, 4, 8, 16, 29, 32, 58, 64, 71, 83, 116, 128, 142, 166, 232, 284, 332, 464, 568, 664, 928, 1136, 1328, 1856, 2059, 2272, 2407, 2656, 3712, 4118, 4544, 4814, 5312, 5893, 8236, 9088, 9628, 10624, 11786, 16472, 19256, 23572, 32944, 38512, 47144, 65888, 77024, 94288, 131776, 154048, 170897, 188576, 263552, 308096, 341794, 377152, 683588, 754304, 1367176, 2734352, 5468704, 10937408, 21874816]

約数ペア:

[(1, 21874816), (2, 10937408), (4, 5468704), (8, 2734352), (16, 1367176), (29, 754304), (32, 683588), (58, 377152), (64, 341794), (71, 308096), (83, 263552), (116, 188576), (128, 170897), (142, 154048), (166, 131776), (232, 94288), (284, 77024), (332, 65888), (464, 47144), (568, 38512), (664, 32944), (928, 23572), (1136, 19256), (1328, 16472), (1856, 11786), (2059, 10624), (2272, 9628), (2407, 9088), (2656, 8236), (3712, 5893), (4118, 5312), (4544, 4814)]