256216545

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{437977}}^1$

素因数の和:438001

約数の個数: 24

約数和(自身を含む): 478271976

約数和(自身を除く): 222055431

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 195, 585, 437977, 1313931, 2189885, 3941793, 5693701, 6569655, 17081103, 19708965, 28468505, 51243309, 85405515, 256216545]

約数ペア:

[(1, 256216545), (3, 85405515), (5, 51243309), (9, 28468505), (13, 19708965), (15, 17081103), (39, 6569655), (45, 5693701), (65, 3941793), (117, 2189885), (195, 1313931), (585, 437977)]