7217505

素因数分解:

$3^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{251}}^1$

素因数の和:339

約数の個数: 40

約数和(自身を含む): 13172544

約数和(自身を除く): 5955039

約数列:

[1, 3, 5, 9, 15, 27, 45, 71, 81, 135, 213, 251, 355, 405, 639, 753, 1065, 1255, 1917, 2259, 3195, 3765, 5751, 6777, 9585, 11295, 17821, 20331, 28755, 33885, 53463, 89105, 101655, 160389, 267315, 481167, 801945, 1443501, 2405835, 7217505]

約数ペア:

[(1, 7217505), (3, 2405835), (5, 1443501), (9, 801945), (15, 481167), (27, 267315), (45, 160389), (71, 101655), (81, 89105), (135, 53463), (213, 33885), (251, 28755), (355, 20331), (405, 17821), (639, 11295), (753, 9585), (1065, 6777), (1255, 5751), (1917, 3765), (2259, 3195)]