28496780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{8431}}^1$

素因数の和:8466

約数の個数: 36

約数和(自身を含む): 64808352

約数和(自身を除く): 36311572

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 8431, 16862, 33724, 42155, 84310, 109603, 168620, 219206, 438412, 548015, 1096030, 1424839, 2192060, 2849678, 5699356, 7124195, 14248390, 28496780]

約数ペア:

[(1, 28496780), (2, 14248390), (4, 7124195), (5, 5699356), (10, 2849678), (13, 2192060), (20, 1424839), (26, 1096030), (52, 548015), (65, 438412), (130, 219206), (169, 168620), (260, 109603), (338, 84310), (676, 42155), (845, 33724), (1690, 16862), (3380, 8431)]