257231910

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{659569}}^1$

素因数の和:659592

約数の個数: 32

約数和(自身を含む): 664846560

約数和(自身を除く): 407614650

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 659569, 1319138, 1978707, 3297845, 3957414, 6595690, 8574397, 9893535, 17148794, 19787070, 25723191, 42871985, 51446382, 85743970, 128615955, 257231910]

約数ペア:

[(1, 257231910), (2, 128615955), (3, 85743970), (5, 51446382), (6, 42871985), (10, 25723191), (13, 19787070), (15, 17148794), (26, 9893535), (30, 8574397), (39, 6595690), (65, 3957414), (78, 3297845), (130, 1978707), (195, 1319138), (390, 659569)]