18992043

素因数分解:

$3^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{257}}^1$

素因数の和:313

約数の個数: 64

約数和(自身を含む): 35665920

約数和(自身を除く): 16673877

約数列:

[1, 3, 7, 9, 17, 21, 23, 27, 51, 63, 69, 119, 153, 161, 189, 207, 257, 357, 391, 459, 483, 621, 771, 1071, 1173, 1449, 1799, 2313, 2737, 3213, 3519, 4347, 4369, 5397, 5911, 6939, 8211, 10557, 13107, 16191, 17733, 24633, 30583, 39321, 41377, 48573, 53199, 73899, 91749, 100487, 117963, 124131, 159597, 275247, 301461, 372393, 703409, 825741, 904383, 1117179, 2110227, 2713149, 6330681, 18992043]

約数ペア:

[(1, 18992043), (3, 6330681), (7, 2713149), (9, 2110227), (17, 1117179), (21, 904383), (23, 825741), (27, 703409), (51, 372393), (63, 301461), (69, 275247), (119, 159597), (153, 124131), (161, 117963), (189, 100487), (207, 91749), (257, 73899), (357, 53199), (391, 48573), (459, 41377), (483, 39321), (621, 30583), (771, 24633), (1071, 17733), (1173, 16191), (1449, 13107), (1799, 10557), (2313, 8211), (2737, 6939), (3213, 5911), (3519, 5397), (4347, 4369)]