28848560

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{27739}}^1$

素因数の和:27765

約数の個数: 40

約数和(自身を含む): 72234960

約数和(自身を除く): 43386400

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 27739, 55478, 110956, 138695, 221912, 277390, 360607, 443824, 554780, 721214, 1109560, 1442428, 1803035, 2219120, 2884856, 3606070, 5769712, 7212140, 14424280, 28848560]

約数ペア:

[(1, 28848560), (2, 14424280), (4, 7212140), (5, 5769712), (8, 3606070), (10, 2884856), (13, 2219120), (16, 1803035), (20, 1442428), (26, 1109560), (40, 721214), (52, 554780), (65, 443824), (80, 360607), (104, 277390), (130, 221912), (208, 138695), (260, 110956), (520, 55478), (1040, 27739)]