20121409

素因数分解:

$7^3\times {\mathrm{11}}^1\times {\mathrm{5333}}^1$

素因数の和:5365

約数の個数: 16

約数和(自身を含む): 25603200

約数和(自身を除く): 5481791

約数列:

[1, 7, 11, 49, 77, 343, 539, 3773, 5333, 37331, 58663, 261317, 410641, 1829219, 2874487, 20121409]

約数ペア:

[(1, 20121409), (7, 2874487), (11, 1829219), (49, 410641), (77, 261317), (343, 58663), (539, 37331), (3773, 5333)]