21895888

素因数分解:

$2^4\times 7^1\times {\mathrm{137}}^1\times {\mathrm{1427}}^1$

素因数の和:1579

約数の個数: 40

約数和(自身を含む): 48871872

約数和(自身を除く): 26975984

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 137, 274, 548, 959, 1096, 1427, 1918, 2192, 2854, 3836, 5708, 7672, 9989, 11416, 15344, 19978, 22832, 39956, 79912, 159824, 195499, 390998, 781996, 1368493, 1563992, 2736986, 3127984, 5473972, 10947944, 21895888]

約数ペア:

[(1, 21895888), (2, 10947944), (4, 5473972), (7, 3127984), (8, 2736986), (14, 1563992), (16, 1368493), (28, 781996), (56, 390998), (112, 195499), (137, 159824), (274, 79912), (548, 39956), (959, 22832), (1096, 19978), (1427, 15344), (1918, 11416), (2192, 9989), (2854, 7672), (3836, 5708)]