19661895

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{157}}^1$

素因数の和:213

約数の個数: 72

約数和(自身を含む): 39338208

約数和(自身を除く): 19676313

約数列:

[1, 3, 5, 9, 11, 15, 23, 33, 45, 55, 69, 99, 115, 121, 157, 165, 207, 253, 345, 363, 471, 495, 605, 759, 785, 1035, 1089, 1265, 1413, 1727, 1815, 2277, 2355, 2783, 3611, 3795, 5181, 5445, 7065, 8349, 8635, 10833, 11385, 13915, 15543, 18055, 18997, 25047, 25905, 32499, 39721, 41745, 54165, 56991, 77715, 94985, 119163, 125235, 162495, 170973, 198605, 284955, 357489, 436931, 595815, 854865, 1310793, 1787445, 2184655, 3932379, 6553965, 19661895]

約数ペア:

[(1, 19661895), (3, 6553965), (5, 3932379), (9, 2184655), (11, 1787445), (15, 1310793), (23, 854865), (33, 595815), (45, 436931), (55, 357489), (69, 284955), (99, 198605), (115, 170973), (121, 162495), (157, 125235), (165, 119163), (207, 94985), (253, 77715), (345, 56991), (363, 54165), (471, 41745), (495, 39721), (605, 32499), (759, 25905), (785, 25047), (1035, 18997), (1089, 18055), (1265, 15543), (1413, 13915), (1727, 11385), (1815, 10833), (2277, 8635), (2355, 8349), (2783, 7065), (3611, 5445), (3795, 5181)]