307940

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{173}}^1$

素因数の和:271

約数の個数: 24

約数和(自身を含む): 657720

約数和(自身を除く): 349780

約数列:

[1, 2, 4, 5, 10, 20, 89, 173, 178, 346, 356, 445, 692, 865, 890, 1730, 1780, 3460, 15397, 30794, 61588, 76985, 153970, 307940]

約数ペア:

[(1, 307940), (2, 153970), (4, 76985), (5, 61588), (10, 30794), (20, 15397), (89, 3460), (173, 1780), (178, 1730), (346, 890), (356, 865), (445, 692)]