21131268784

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{839}}^1\times {\mathrm{22171}}^1$

素因数の和:23089

約数の個数: 40

約数和(自身を含む): 41569839360

約数和(自身を除く): 20438570576

約数列:

[1, 2, 4, 8, 16, 71, 142, 284, 568, 839, 1136, 1678, 3356, 6712, 13424, 22171, 44342, 59569, 88684, 119138, 177368, 238276, 354736, 476552, 953104, 1574141, 3148282, 6296564, 12593128, 18601469, 25186256, 37202938, 74405876, 148811752, 297623504, 1320704299, 2641408598, 5282817196, 10565634392, 21131268784]

約数ペア:

[(1, 21131268784), (2, 10565634392), (4, 5282817196), (8, 2641408598), (16, 1320704299), (71, 297623504), (142, 148811752), (284, 74405876), (568, 37202938), (839, 25186256), (1136, 18601469), (1678, 12593128), (3356, 6296564), (6712, 3148282), (13424, 1574141), (22171, 953104), (44342, 476552), (59569, 354736), (88684, 238276), (119138, 177368)]