1321515

素因数分解:

$3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{251}}^1$

素因数の和:281

約数の個数: 40

約数和(自身を含む): 2561328

約数和(自身を除く): 1239813

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 81, 117, 135, 195, 251, 351, 405, 585, 753, 1053, 1255, 1755, 2259, 3263, 3765, 5265, 6777, 9789, 11295, 16315, 20331, 29367, 33885, 48945, 88101, 101655, 146835, 264303, 440505, 1321515]

約数ペア:

[(1, 1321515), (3, 440505), (5, 264303), (9, 146835), (13, 101655), (15, 88101), (27, 48945), (39, 33885), (45, 29367), (65, 20331), (81, 16315), (117, 11295), (135, 9789), (195, 6777), (251, 5265), (351, 3765), (405, 3263), (585, 2259), (753, 1755), (1053, 1255)]