17890145

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{137}}^1$

素因数の和:210

約数の個数: 48

約数和(自身を含む): 27751248

約数和(自身を除く): 9861103

約数列:

[1, 5, 7, 13, 35, 41, 49, 65, 91, 137, 205, 245, 287, 455, 533, 637, 685, 959, 1435, 1781, 2009, 2665, 3185, 3731, 4795, 5617, 6713, 8905, 10045, 12467, 18655, 26117, 28085, 33565, 39319, 62335, 73021, 87269, 130585, 196595, 275233, 365105, 436345, 511147, 1376165, 2555735, 3578029, 17890145]

約数ペア:

[(1, 17890145), (5, 3578029), (7, 2555735), (13, 1376165), (35, 511147), (41, 436345), (49, 365105), (65, 275233), (91, 196595), (137, 130585), (205, 87269), (245, 73021), (287, 62335), (455, 39319), (533, 33565), (637, 28085), (685, 26117), (959, 18655), (1435, 12467), (1781, 10045), (2009, 8905), (2665, 6713), (3185, 5617), (3731, 4795)]