28754505

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{199}}^1$

素因数の和:255

約数の個数: 72

約数和(自身を含む): 57096000

約数和(自身を除く): 28341495

約数列:

[1, 3, 5, 9, 13, 15, 19, 39, 45, 57, 65, 95, 117, 169, 171, 195, 199, 247, 285, 507, 585, 597, 741, 845, 855, 995, 1235, 1521, 1791, 2223, 2535, 2587, 2985, 3211, 3705, 3781, 7605, 7761, 8955, 9633, 11115, 11343, 12935, 16055, 18905, 23283, 28899, 33631, 34029, 38805, 48165, 49153, 56715, 100893, 116415, 144495, 147459, 168155, 170145, 245765, 302679, 442377, 504465, 638989, 737295, 1513395, 1916967, 2211885, 3194945, 5750901, 9584835, 28754505]

約数ペア:

[(1, 28754505), (3, 9584835), (5, 5750901), (9, 3194945), (13, 2211885), (15, 1916967), (19, 1513395), (39, 737295), (45, 638989), (57, 504465), (65, 442377), (95, 302679), (117, 245765), (169, 170145), (171, 168155), (195, 147459), (199, 144495), (247, 116415), (285, 100893), (507, 56715), (585, 49153), (597, 48165), (741, 38805), (845, 34029), (855, 33631), (995, 28899), (1235, 23283), (1521, 18905), (1791, 16055), (2223, 12935), (2535, 11343), (2587, 11115), (2985, 9633), (3211, 8955), (3705, 7761), (3781, 7605)]