18691820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{7027}}^1$

素因数の和:7062

約数の個数: 48

約数和(自身を含む): 47228160

約数和(自身を除く): 28536340

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330, 2660, 7027, 14054, 28108, 35135, 49189, 70270, 98378, 133513, 140540, 196756, 245945, 267026, 491890, 534052, 667565, 934591, 983780, 1335130, 1869182, 2670260, 3738364, 4672955, 9345910, 18691820]

約数ペア:

[(1, 18691820), (2, 9345910), (4, 4672955), (5, 3738364), (7, 2670260), (10, 1869182), (14, 1335130), (19, 983780), (20, 934591), (28, 667565), (35, 534052), (38, 491890), (70, 267026), (76, 245945), (95, 196756), (133, 140540), (140, 133513), (190, 98378), (266, 70270), (380, 49189), (532, 35135), (665, 28108), (1330, 14054), (2660, 7027)]