20216820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{25919}}^1$

素因数の和:25944

約数の個数: 48

約数和(自身を含む): 60963840

約数和(自身を除く): 40747020

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 25919, 51838, 77757, 103676, 129595, 155514, 259190, 311028, 336947, 388785, 518380, 673894, 777570, 1010841, 1347788, 1555140, 1684735, 2021682, 3369470, 4043364, 5054205, 6738940, 10108410, 20216820]

約数ペア:

[(1, 20216820), (2, 10108410), (3, 6738940), (4, 5054205), (5, 4043364), (6, 3369470), (10, 2021682), (12, 1684735), (13, 1555140), (15, 1347788), (20, 1010841), (26, 777570), (30, 673894), (39, 518380), (52, 388785), (60, 336947), (65, 311028), (78, 259190), (130, 155514), (156, 129595), (195, 103676), (260, 77757), (390, 51838), (780, 25919)]