289193840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{278071}}^1$

素因数の和:278097

約数の個数: 40

約数和(自身を含む): 724099488

約数和(自身を除く): 434905648

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 278071, 556142, 1112284, 1390355, 2224568, 2780710, 3614923, 4449136, 5561420, 7229846, 11122840, 14459692, 18074615, 22245680, 28919384, 36149230, 57838768, 72298460, 144596920, 289193840]

約数ペア:

[(1, 289193840), (2, 144596920), (4, 72298460), (5, 57838768), (8, 36149230), (10, 28919384), (13, 22245680), (16, 18074615), (20, 14459692), (26, 11122840), (40, 7229846), (52, 5561420), (65, 4449136), (80, 3614923), (104, 2780710), (130, 2224568), (208, 1390355), (260, 1112284), (520, 556142), (1040, 278071)]