256230481940

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{487}}^1\times {\mathrm{907139}}^1$

素因数の和:907664

約数の個数: 48

約数和(自身を含む): 557782243200

約数和(自身を除く): 301551761260

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 487, 580, 974, 1948, 2435, 4870, 9740, 14123, 28246, 56492, 70615, 141230, 282460, 907139, 1814278, 3628556, 4535695, 9071390, 18142780, 26307031, 52614062, 105228124, 131535155, 263070310, 441776693, 526140620, 883553386, 1767106772, 2208883465, 4417766930, 8835533860, 12811524097, 25623048194, 51246096388, 64057620485, 128115240970, 256230481940]

約数ペア:

[(1, 256230481940), (2, 128115240970), (4, 64057620485), (5, 51246096388), (10, 25623048194), (20, 12811524097), (29, 8835533860), (58, 4417766930), (116, 2208883465), (145, 1767106772), (290, 883553386), (487, 526140620), (580, 441776693), (974, 263070310), (1948, 131535155), (2435, 105228124), (4870, 52614062), (9740, 26307031), (14123, 18142780), (28246, 9071390), (56492, 4535695), (70615, 3628556), (141230, 1814278), (282460, 907139)]