19970640

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{27737}}^1$

素因数の和:27756

約数の個数: 60

約数和(自身を含む): 67070484

約数和(自身を除く): 47099844

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 27737, 55474, 83211, 110948, 138685, 166422, 221896, 249633, 277370, 332844, 416055, 443792, 499266, 554740, 665688, 832110, 998532, 1109480, 1248165, 1331376, 1664220, 1997064, 2218960, 2496330, 3328440, 3994128, 4992660, 6656880, 9985320, 19970640]

約数ペア:

[(1, 19970640), (2, 9985320), (3, 6656880), (4, 4992660), (5, 3994128), (6, 3328440), (8, 2496330), (9, 2218960), (10, 1997064), (12, 1664220), (15, 1331376), (16, 1248165), (18, 1109480), (20, 998532), (24, 832110), (30, 665688), (36, 554740), (40, 499266), (45, 443792), (48, 416055), (60, 332844), (72, 277370), (80, 249633), (90, 221896), (120, 166422), (144, 138685), (180, 110948), (240, 83211), (360, 55474), (720, 27737)]