20914641

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{17}}^3\times {\mathrm{43}}^1$

素因数の和:111

約数の個数: 48

約数和(自身を含む): 35830080

約数和(自身を除く): 14915439

約数列:

[1, 3, 9, 11, 17, 33, 43, 51, 99, 129, 153, 187, 289, 387, 473, 561, 731, 867, 1419, 1683, 2193, 2601, 3179, 4257, 4913, 6579, 8041, 9537, 12427, 14739, 24123, 28611, 37281, 44217, 54043, 72369, 111843, 136697, 162129, 211259, 410091, 486387, 633777, 1230273, 1901331, 2323849, 6971547, 20914641]

約数ペア:

[(1, 20914641), (3, 6971547), (9, 2323849), (11, 1901331), (17, 1230273), (33, 633777), (43, 486387), (51, 410091), (99, 211259), (129, 162129), (153, 136697), (187, 111843), (289, 72369), (387, 54043), (473, 44217), (561, 37281), (731, 28611), (867, 24123), (1419, 14739), (1683, 12427), (2193, 9537), (2601, 8041), (3179, 6579), (4257, 4913)]