261221805

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{446533}}^1$

素因数の和:446557

約数の個数: 24

約数和(自身を含む): 487615128

約数和(自身を除く): 226393323

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 195, 585, 446533, 1339599, 2232665, 4018797, 5804929, 6697995, 17414787, 20093985, 29024645, 52244361, 87073935, 261221805]

約数ペア:

[(1, 261221805), (3, 87073935), (5, 52244361), (9, 29024645), (13, 20093985), (15, 17414787), (39, 6697995), (45, 5804929), (65, 4018797), (117, 2232665), (195, 1339599), (585, 446533)]