20681949128

素因数分解:

$2^3\times {\mathrm{239}}^1\times {\mathrm{563}}^1\times {\mathrm{19213}}^1$

素因数の和:20021

約数の個数: 32

約数和(自身を含む): 39012105600

約数和(自身を除く): 18330156472

約数列:

[1, 2, 4, 8, 239, 478, 563, 956, 1126, 1912, 2252, 4504, 19213, 38426, 76852, 134557, 153704, 269114, 538228, 1076456, 4591907, 9183814, 10816919, 18367628, 21633838, 36735256, 43267676, 86535352, 2585243641, 5170487282, 10340974564, 20681949128]

約数ペア:

[(1, 20681949128), (2, 10340974564), (4, 5170487282), (8, 2585243641), (239, 86535352), (478, 43267676), (563, 36735256), (956, 21633838), (1126, 18367628), (1912, 10816919), (2252, 9183814), (4504, 4591907), (19213, 1076456), (38426, 538228), (76852, 269114), (134557, 153704)]