20963475

素因数分解:

$3^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{2389}}^1$

素因数の和:2421

約数の個数: 48

約数和(自身を含む): 41490400

約数和(自身を除く): 20526925

約数列:

[1, 3, 5, 9, 13, 15, 25, 27, 39, 45, 65, 75, 117, 135, 195, 225, 325, 351, 585, 675, 975, 1755, 2389, 2925, 7167, 8775, 11945, 21501, 31057, 35835, 59725, 64503, 93171, 107505, 155285, 179175, 279513, 322515, 465855, 537525, 776425, 838539, 1397565, 1612575, 2329275, 4192695, 6987825, 20963475]

約数ペア:

[(1, 20963475), (3, 6987825), (5, 4192695), (9, 2329275), (13, 1612575), (15, 1397565), (25, 838539), (27, 776425), (39, 537525), (45, 465855), (65, 322515), (75, 279513), (117, 179175), (135, 155285), (195, 107505), (225, 93171), (325, 64503), (351, 59725), (585, 35835), (675, 31057), (975, 21501), (1755, 11945), (2389, 8775), (2925, 7167)]