28756780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{110603}}^1$

素因数の和:110625

約数の個数: 24

約数和(自身を含む): 65035152

約数和(自身を除く): 36278372

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 110603, 221206, 442412, 553015, 1106030, 1437839, 2212060, 2875678, 5751356, 7189195, 14378390, 28756780]

約数ペア:

[(1, 28756780), (2, 14378390), (4, 7189195), (5, 5751356), (10, 2875678), (13, 2212060), (20, 1437839), (26, 1106030), (52, 553015), (65, 442412), (130, 221206), (260, 110603)]