21057321790

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{1049}}^1\times {\mathrm{87277}}^1$

素因数の和:88356

約数の個数: 32

約数和(自身を含む): 39589300800

約数和(自身を除く): 18531979010

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 1049, 2098, 5245, 10490, 24127, 48254, 87277, 120635, 174554, 241270, 436385, 872770, 2007371, 4014742, 10036855, 20073710, 91553573, 183107146, 457767865, 915535730, 2105732179, 4211464358, 10528660895, 21057321790]

約数ペア:

[(1, 21057321790), (2, 10528660895), (5, 4211464358), (10, 2105732179), (23, 915535730), (46, 457767865), (115, 183107146), (230, 91553573), (1049, 20073710), (2098, 10036855), (5245, 4014742), (10490, 2007371), (24127, 872770), (48254, 436385), (87277, 241270), (120635, 174554)]