20452664

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{239}}^1\times {\mathrm{563}}^1$

素因数の和:827

約数の個数: 32

約数和(自身を含む): 40608000

約数和(自身を除く): 20155336

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 239, 478, 563, 956, 1126, 1912, 2252, 4504, 4541, 9082, 10697, 18164, 21394, 36328, 42788, 85576, 134557, 269114, 538228, 1076456, 2556583, 5113166, 10226332, 20452664]

約数ペア:

[(1, 20452664), (2, 10226332), (4, 5113166), (8, 2556583), (19, 1076456), (38, 538228), (76, 269114), (152, 134557), (239, 85576), (478, 42788), (563, 36328), (956, 21394), (1126, 18164), (1912, 10697), (2252, 9082), (4504, 4541)]