31880385

素因数分解:

$3^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{1381}}^1$

素因数の和:1420

約数の個数: 48

約数和(自身を含む): 60365760

約数和(自身を除く): 28485375

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 81, 95, 135, 171, 243, 285, 405, 513, 855, 1215, 1381, 1539, 2565, 4143, 4617, 6905, 7695, 12429, 20715, 23085, 26239, 37287, 62145, 78717, 111861, 131195, 186435, 236151, 335583, 393585, 559305, 708453, 1180755, 1677915, 2125359, 3542265, 6376077, 10626795, 31880385]

約数ペア:

[(1, 31880385), (3, 10626795), (5, 6376077), (9, 3542265), (15, 2125359), (19, 1677915), (27, 1180755), (45, 708453), (57, 559305), (81, 393585), (95, 335583), (135, 236151), (171, 186435), (243, 131195), (285, 111861), (405, 78717), (513, 62145), (855, 37287), (1215, 26239), (1381, 23085), (1539, 20715), (2565, 12429), (4143, 7695), (4617, 6905)]