647372007

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{347489}}^1$

素因数の和:347524

約数の個数: 20

約数和(自身を含む): 1009110960

約数和(自身を除く): 361738953

約数列:

[1, 3, 9, 23, 27, 69, 81, 207, 621, 1863, 347489, 1042467, 3127401, 7992247, 9382203, 23976741, 28146609, 71930223, 215790669, 647372007]

約数ペア:

[(1, 647372007), (3, 215790669), (9, 71930223), (23, 28146609), (27, 23976741), (69, 9382203), (81, 7992247), (207, 3127401), (621, 1042467), (1863, 347489)]