20204340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{25903}}^1$

素因数の和:25928

約数の個数: 48

約数和(自身を含む): 60926208

約数和(自身を除く): 40721868

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, 25903, 51806, 77709, 103612, 129515, 155418, 259030, 310836, 336739, 388545, 518060, 673478, 777090, 1010217, 1346956, 1554180, 1683695, 2020434, 3367390, 4040868, 5051085, 6734780, 10102170, 20204340]

約数ペア:

[(1, 20204340), (2, 10102170), (3, 6734780), (4, 5051085), (5, 4040868), (6, 3367390), (10, 2020434), (12, 1683695), (13, 1554180), (15, 1346956), (20, 1010217), (26, 777090), (30, 673478), (39, 518060), (52, 388545), (60, 336739), (65, 310836), (78, 259030), (130, 155418), (156, 129515), (195, 103612), (260, 77709), (390, 51806), (780, 25903)]