19675760

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{18919}}^1$

素因数の和:18945

約数の個数: 40

約数和(自身を含む): 49267680

約数和(自身を除く): 29591920

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 18919, 37838, 75676, 94595, 151352, 189190, 245947, 302704, 378380, 491894, 756760, 983788, 1229735, 1513520, 1967576, 2459470, 3935152, 4918940, 9837880, 19675760]

約数ペア:

[(1, 19675760), (2, 9837880), (4, 4918940), (5, 3935152), (8, 2459470), (10, 1967576), (13, 1513520), (16, 1229735), (20, 983788), (26, 756760), (40, 491894), (52, 378380), (65, 302704), (80, 245947), (104, 189190), (130, 151352), (208, 94595), (260, 75676), (520, 37838), (1040, 18919)]