81449095

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{181}}^1$

素因数の和:272

約数の個数: 64

約数和(自身を含む): 129153024

約数和(自身を除く): 47703929

約数列:

[1, 5, 7, 13, 23, 35, 43, 65, 91, 115, 161, 181, 215, 299, 301, 455, 559, 805, 905, 989, 1267, 1495, 1505, 2093, 2353, 2795, 3913, 4163, 4945, 6335, 6923, 7783, 10465, 11765, 12857, 16471, 19565, 20815, 29141, 34615, 38915, 54119, 54481, 64285, 82355, 89999, 101179, 145705, 179009, 270595, 272405, 378833, 449995, 505895, 708253, 895045, 1253063, 1894165, 2327117, 3541265, 6265315, 11635585, 16289819, 81449095]

約数ペア:

[(1, 81449095), (5, 16289819), (7, 11635585), (13, 6265315), (23, 3541265), (35, 2327117), (43, 1894165), (65, 1253063), (91, 895045), (115, 708253), (161, 505895), (181, 449995), (215, 378833), (299, 272405), (301, 270595), (455, 179009), (559, 145705), (805, 101179), (905, 89999), (989, 82355), (1267, 64285), (1495, 54481), (1505, 54119), (2093, 38915), (2353, 34615), (2795, 29141), (3913, 20815), (4163, 19565), (4945, 16471), (6335, 12857), (6923, 11765), (7783, 10465)]