9780420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{12539}}^1$

素因数の和:12564

約数の個数: 48

約数和(自身を含む): 29494080

約数和(自身を除く): 19713660

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, 12539, 25078, 37617, 50156, 62695, 75234, 125390, 150468, 163007, 188085, 250780, 326014, 376170, 489021, 652028, 752340, 815035, 978042, 1630070, 1956084, 2445105, 3260140, 4890210, 9780420]

約数ペア:

[(1, 9780420), (2, 4890210), (3, 3260140), (4, 2445105), (5, 1956084), (6, 1630070), (10, 978042), (12, 815035), (13, 752340), (15, 652028), (20, 489021), (26, 376170), (30, 326014), (39, 250780), (52, 188085), (60, 163007), (65, 150468), (78, 125390), (130, 75234), (156, 62695), (195, 50156), (260, 37617), (390, 25078), (780, 12539)]