21455710

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{1217}}^1$

素因数の和:1308

約数の個数: 32

約数和(自身を含む): 40515552

約数和(自身を除く): 19059842

約数列:

[1, 2, 5, 10, 41, 43, 82, 86, 205, 215, 410, 430, 1217, 1763, 2434, 3526, 6085, 8815, 12170, 17630, 49897, 52331, 99794, 104662, 249485, 261655, 498970, 523310, 2145571, 4291142, 10727855, 21455710]

約数ペア:

[(1, 21455710), (2, 10727855), (5, 4291142), (10, 2145571), (41, 523310), (43, 498970), (82, 261655), (86, 249485), (205, 104662), (215, 99794), (410, 52331), (430, 49897), (1217, 17630), (1763, 12170), (2434, 8815), (3526, 6085)]