20287611

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{557}}^1$

素因数の和:656

約数の個数: 32

約数和(自身を含む): 32140800

約数和(自身を除く): 11853189

約数列:

[1, 3, 9, 19, 27, 57, 71, 171, 213, 513, 557, 639, 1349, 1671, 1917, 4047, 5013, 10583, 12141, 15039, 31749, 36423, 39547, 95247, 118641, 285741, 355923, 751393, 1067769, 2254179, 6762537, 20287611]

約数ペア:

[(1, 20287611), (3, 6762537), (9, 2254179), (19, 1067769), (27, 751393), (57, 355923), (71, 285741), (171, 118641), (213, 95247), (513, 39547), (557, 36423), (639, 31749), (1349, 15039), (1671, 12141), (1917, 10583), (4047, 5013)]