15639729

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{421}}^1$

素因数の和:521

約数の個数: 32

約数和(自身を含む): 25117440

約数和(自身を除く): 9477711

約数列:

[1, 3, 7, 21, 29, 61, 87, 183, 203, 421, 427, 609, 1263, 1281, 1769, 2947, 5307, 8841, 12209, 12383, 25681, 36627, 37149, 77043, 85463, 179767, 256389, 539301, 744749, 2234247, 5213243, 15639729]

約数ペア:

[(1, 15639729), (3, 5213243), (7, 2234247), (21, 744749), (29, 539301), (61, 256389), (87, 179767), (183, 85463), (203, 77043), (421, 37149), (427, 36627), (609, 25681), (1263, 12383), (1281, 12209), (1769, 8841), (2947, 5307)]