21169664

素因数分解:

$2^9\times {\mathrm{173}}^1\times {\mathrm{239}}^1$

素因数の和:430

約数の個数: 40

約数和(自身を含む): 42720480

約数和(自身を除く): 21550816

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 173, 239, 256, 346, 478, 512, 692, 956, 1384, 1912, 2768, 3824, 5536, 7648, 11072, 15296, 22144, 30592, 41347, 44288, 61184, 82694, 88576, 122368, 165388, 330776, 661552, 1323104, 2646208, 5292416, 10584832, 21169664]

約数ペア:

[(1, 21169664), (2, 10584832), (4, 5292416), (8, 2646208), (16, 1323104), (32, 661552), (64, 330776), (128, 165388), (173, 122368), (239, 88576), (256, 82694), (346, 61184), (478, 44288), (512, 41347), (692, 30592), (956, 22144), (1384, 15296), (1912, 11072), (2768, 7648), (3824, 5536)]