71928207

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^2\times {\mathrm{43}}^1$

素因数の和:137

約数の個数: 72

約数和(自身を含む): 125549424

約数和(自身を除く): 53621217

約数列:

[1, 3, 9, 13, 17, 29, 39, 43, 51, 87, 117, 129, 153, 221, 261, 377, 387, 493, 559, 663, 731, 841, 1131, 1247, 1479, 1677, 1989, 2193, 2523, 3393, 3741, 4437, 5031, 6409, 6579, 7569, 9503, 10933, 11223, 14297, 16211, 19227, 21199, 28509, 32799, 36163, 42891, 48633, 57681, 63597, 85527, 98397, 108489, 128673, 145899, 185861, 190791, 275587, 325467, 470119, 557583, 614771, 826761, 1410357, 1672749, 1844313, 2480283, 4231071, 5532939, 7992023, 23976069, 71928207]

約数ペア:

[(1, 71928207), (3, 23976069), (9, 7992023), (13, 5532939), (17, 4231071), (29, 2480283), (39, 1844313), (43, 1672749), (51, 1410357), (87, 826761), (117, 614771), (129, 557583), (153, 470119), (221, 325467), (261, 275587), (377, 190791), (387, 185861), (493, 145899), (559, 128673), (663, 108489), (731, 98397), (841, 85527), (1131, 63597), (1247, 57681), (1479, 48633), (1677, 42891), (1989, 36163), (2193, 32799), (2523, 28509), (3393, 21199), (3741, 19227), (4437, 16211), (5031, 14297), (6409, 11223), (6579, 10933), (7569, 9503)]