20154870

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{239}}^1\times {\mathrm{937}}^1$

素因数の和:1189

約数の個数: 48

約数和(自身を含む): 52678080

約数和(自身を除く): 32523210

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 239, 478, 717, 937, 1195, 1434, 1874, 2151, 2390, 2811, 3585, 4302, 4685, 5622, 7170, 8433, 9370, 10755, 14055, 16866, 21510, 28110, 42165, 84330, 223943, 447886, 671829, 1119715, 1343658, 2015487, 2239430, 3359145, 4030974, 6718290, 10077435, 20154870]

約数ペア:

[(1, 20154870), (2, 10077435), (3, 6718290), (5, 4030974), (6, 3359145), (9, 2239430), (10, 2015487), (15, 1343658), (18, 1119715), (30, 671829), (45, 447886), (90, 223943), (239, 84330), (478, 42165), (717, 28110), (937, 21510), (1195, 16866), (1434, 14055), (1874, 10755), (2151, 9370), (2390, 8433), (2811, 7170), (3585, 5622), (4302, 4685)]