27720387

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{491}}^1$

素因数の和:561

約数の個数: 40

約数和(自身を含む): 45006192

約数和(自身を除く): 17285805

約数列:

[1, 3, 9, 17, 27, 41, 51, 81, 123, 153, 369, 459, 491, 697, 1107, 1377, 1473, 2091, 3321, 4419, 6273, 8347, 13257, 18819, 20131, 25041, 39771, 56457, 60393, 75123, 181179, 225369, 342227, 543537, 676107, 1026681, 1630611, 3080043, 9240129, 27720387]

約数ペア:

[(1, 27720387), (3, 9240129), (9, 3080043), (17, 1630611), (27, 1026681), (41, 676107), (51, 543537), (81, 342227), (123, 225369), (153, 181179), (369, 75123), (459, 60393), (491, 56457), (697, 39771), (1107, 25041), (1377, 20131), (1473, 18819), (2091, 13257), (3321, 8347), (4419, 6273)]