209946620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{807487}}^1$

素因数の和:807509

約数の個数: 24

約数和(自身を含む): 474802944

約数和(自身を除く): 264856324

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 807487, 1614974, 3229948, 4037435, 8074870, 10497331, 16149740, 20994662, 41989324, 52486655, 104973310, 209946620]

約数ペア:

[(1, 209946620), (2, 104973310), (4, 52486655), (5, 41989324), (10, 20994662), (13, 16149740), (20, 10497331), (26, 8074870), (52, 4037435), (65, 3229948), (130, 1614974), (260, 807487)]