20408912

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{1789}}^1$

素因数の和:1851

約数の個数: 40

約数和(自身を含む): 42616320

約数和(自身を除く): 22207408

約数列:

[1, 2, 4, 8, 16, 23, 31, 46, 62, 92, 124, 184, 248, 368, 496, 713, 1426, 1789, 2852, 3578, 5704, 7156, 11408, 14312, 28624, 41147, 55459, 82294, 110918, 164588, 221836, 329176, 443672, 658352, 887344, 1275557, 2551114, 5102228, 10204456, 20408912]

約数ペア:

[(1, 20408912), (2, 10204456), (4, 5102228), (8, 2551114), (16, 1275557), (23, 887344), (31, 658352), (46, 443672), (62, 329176), (92, 221836), (124, 164588), (184, 110918), (248, 82294), (368, 55459), (496, 41147), (713, 28624), (1426, 14312), (1789, 11408), (2852, 7156), (3578, 5704)]