21335972

素因数分解:

$2^2\times 7^3\times {\mathrm{15551}}^1$

素因数の和:15576

約数の個数: 24

約数和(自身を含む): 43545600

約数和(自身を除く): 22209628

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 343, 686, 1372, 15551, 31102, 62204, 108857, 217714, 435428, 761999, 1523998, 3047996, 5333993, 10667986, 21335972]

約数ペア:

[(1, 21335972), (2, 10667986), (4, 5333993), (7, 3047996), (14, 1523998), (28, 761999), (49, 435428), (98, 217714), (196, 108857), (343, 62204), (686, 31102), (1372, 15551)]