28319980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{108923}}^1$

素因数の和:108945

約数の個数: 24

約数和(自身を含む): 64047312

約数和(自身を除く): 35727332

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 108923, 217846, 435692, 544615, 1089230, 1415999, 2178460, 2831998, 5663996, 7079995, 14159990, 28319980]

約数ペア:

[(1, 28319980), (2, 14159990), (4, 7079995), (5, 5663996), (10, 2831998), (13, 2178460), (20, 1415999), (26, 1089230), (52, 544615), (65, 435692), (130, 217846), (260, 108923)]