489649940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{269}}^1\times {\mathrm{7001}}^1$

素因数の和:7292

約数の個数: 48

約数和(自身を含む): 1111637520

約数和(自身を除く): 621987580

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 269, 538, 1076, 1345, 2690, 3497, 5380, 6994, 7001, 13988, 14002, 17485, 28004, 34970, 35005, 69940, 70010, 91013, 140020, 182026, 364052, 455065, 910130, 1820260, 1883269, 3766538, 7533076, 9416345, 18832690, 24482497, 37665380, 48964994, 97929988, 122412485, 244824970, 489649940]

約数ペア:

[(1, 489649940), (2, 244824970), (4, 122412485), (5, 97929988), (10, 48964994), (13, 37665380), (20, 24482497), (26, 18832690), (52, 9416345), (65, 7533076), (130, 3766538), (260, 1883269), (269, 1820260), (538, 910130), (1076, 455065), (1345, 364052), (2690, 182026), (3497, 140020), (5380, 91013), (6994, 70010), (7001, 69940), (13988, 35005), (14002, 34970), (17485, 28004)]