20899860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{163}}^1\times {\mathrm{2137}}^1$

素因数の和:2312

約数の個数: 48

約数和(自身を含む): 58906176

約数和(自身を除く): 38006316

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 163, 326, 489, 652, 815, 978, 1630, 1956, 2137, 2445, 3260, 4274, 4890, 6411, 8548, 9780, 10685, 12822, 21370, 25644, 32055, 42740, 64110, 128220, 348331, 696662, 1044993, 1393324, 1741655, 2089986, 3483310, 4179972, 5224965, 6966620, 10449930, 20899860]

約数ペア:

[(1, 20899860), (2, 10449930), (3, 6966620), (4, 5224965), (5, 4179972), (6, 3483310), (10, 2089986), (12, 1741655), (15, 1393324), (20, 1044993), (30, 696662), (60, 348331), (163, 128220), (326, 64110), (489, 42740), (652, 32055), (815, 25644), (978, 21370), (1630, 12822), (1956, 10685), (2137, 9780), (2445, 8548), (3260, 6411), (4274, 4890)]