20719720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{73999}}^1$

素因数の和:74017

約数の個数: 32

約数和(自身を含む): 53280000

約数和(自身を除く): 32560280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 73999, 147998, 295996, 369995, 517993, 591992, 739990, 1035986, 1479980, 2071972, 2589965, 2959960, 4143944, 5179930, 10359860, 20719720]

約数ペア:

[(1, 20719720), (2, 10359860), (4, 5179930), (5, 4143944), (7, 2959960), (8, 2589965), (10, 2071972), (14, 1479980), (20, 1035986), (28, 739990), (35, 591992), (40, 517993), (56, 369995), (70, 295996), (140, 147998), (280, 73999)]