9990765

素因数分解:

$3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1$

素因数の和:194

約数の個数: 48

約数和(自身を含む): 18195840

約数和(自身を除く): 8205075

約数列:

[1, 3, 5, 9, 15, 45, 53, 59, 71, 159, 177, 213, 265, 295, 355, 477, 531, 639, 795, 885, 1065, 2385, 2655, 3127, 3195, 3763, 4189, 9381, 11289, 12567, 15635, 18815, 20945, 28143, 33867, 37701, 46905, 56445, 62835, 140715, 169335, 188505, 222017, 666051, 1110085, 1998153, 3330255, 9990765]

約数ペア:

[(1, 9990765), (3, 3330255), (5, 1998153), (9, 1110085), (15, 666051), (45, 222017), (53, 188505), (59, 169335), (71, 140715), (159, 62835), (177, 56445), (213, 46905), (265, 37701), (295, 33867), (355, 28143), (477, 20945), (531, 18815), (639, 15635), (795, 12567), (885, 11289), (1065, 9381), (2385, 4189), (2655, 3763), (3127, 3195)]