1721655

素因数分解:

$3^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1$

素因数の和:142

約数の個数: 48

約数和(自身を含む): 3363360

約数和(自身を除く): 1641705

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 81, 109, 117, 135, 195, 243, 327, 351, 405, 545, 585, 981, 1053, 1215, 1417, 1635, 1755, 2943, 3159, 4251, 4905, 5265, 7085, 8829, 12753, 14715, 15795, 21255, 26487, 38259, 44145, 63765, 114777, 132435, 191295, 344331, 573885, 1721655]

約数ペア:

[(1, 1721655), (3, 573885), (5, 344331), (9, 191295), (13, 132435), (15, 114777), (27, 63765), (39, 44145), (45, 38259), (65, 26487), (81, 21255), (109, 15795), (117, 14715), (135, 12753), (195, 8829), (243, 7085), (327, 5265), (351, 4905), (405, 4251), (545, 3159), (585, 2943), (981, 1755), (1053, 1635), (1215, 1417)]