19990230

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{51257}}^1$

素因数の和:51280

約数の個数: 32

約数和(自身を含む): 51668064

約数和(自身を除く): 31677834

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 51257, 102514, 153771, 256285, 307542, 512570, 666341, 768855, 1332682, 1537710, 1999023, 3331705, 3998046, 6663410, 9995115, 19990230]

約数ペア:

[(1, 19990230), (2, 9995115), (3, 6663410), (5, 3998046), (6, 3331705), (10, 1999023), (13, 1537710), (15, 1332682), (26, 768855), (30, 666341), (39, 512570), (65, 307542), (78, 256285), (130, 153771), (195, 102514), (390, 51257)]