26990.0000000

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{181}}^1$

素因数の和:254

約数の個数: 48

約数和(自身を含む): 12492480

約数和(自身を除く): 5838015

約数列:

[1, 3, 5, 9, 15, 19, 43, 45, 57, 95, 129, 171, 181, 215, 285, 387, 543, 645, 817, 855, 905, 1629, 1935, 2451, 2715, 3439, 4085, 7353, 7783, 8145, 10317, 12255, 17195, 23349, 30951, 36765, 38915, 51585, 70047, 116745, 147877, 154755, 350235, 443631, 739385, 1330893, 2218155, 6654465]

約数ペア:

[(1, 6654465), (3, 2218155), (5, 1330893), (9, 739385), (15, 443631), (19, 350235), (43, 154755), (45, 147877), (57, 116745), (95, 70047), (129, 51585), (171, 38915), (181, 36765), (215, 30951), (285, 23349), (387, 17195), (543, 12255), (645, 10317), (817, 8145), (855, 7783), (905, 7353), (1629, 4085), (1935, 3439), (2451, 2715)]