21479740

素因数分解:

$2^2\times 5^1\times {\mathrm{601}}^1\times {\mathrm{1787}}^1$

素因数の和:2397

約数の個数: 24

約数和(自身を含む): 45207792

約数和(自身を除く): 23728052

約数列:

[1, 2, 4, 5, 10, 20, 601, 1202, 1787, 2404, 3005, 3574, 6010, 7148, 8935, 12020, 17870, 35740, 1073987, 2147974, 4295948, 5369935, 10739870, 21479740]

約数ペア:

[(1, 21479740), (2, 10739870), (4, 5369935), (5, 4295948), (10, 2147974), (20, 1073987), (601, 35740), (1202, 17870), (1787, 12020), (2404, 8935), (3005, 7148), (3574, 6010)]