21464540

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{63131}}^1$

素因数の和:63157

約数の個数: 24

約数和(自身を含む): 47727792

約数和(自身を除く): 26263252

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 63131, 126262, 252524, 315655, 631310, 1073227, 1262620, 2146454, 4292908, 5366135, 10732270, 21464540]

約数ペア:

[(1, 21464540), (2, 10732270), (4, 5366135), (5, 4292908), (10, 2146454), (17, 1262620), (20, 1073227), (34, 631310), (68, 315655), (85, 252524), (170, 126262), (340, 63131)]