668655

素因数分解:

$3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1$

素因数の和:157

約数の個数: 40

約数和(自身を含む): 1300992

約数和(自身を除く): 632337

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 81, 117, 127, 135, 195, 351, 381, 405, 585, 635, 1053, 1143, 1651, 1755, 1905, 3429, 4953, 5265, 5715, 8255, 10287, 14859, 17145, 24765, 44577, 51435, 74295, 133731, 222885, 668655]

約数ペア:

[(1, 668655), (3, 222885), (5, 133731), (9, 74295), (13, 51435), (15, 44577), (27, 24765), (39, 17145), (45, 14859), (65, 10287), (81, 8255), (117, 5715), (127, 5265), (135, 4953), (195, 3429), (351, 1905), (381, 1755), (405, 1651), (585, 1143), (635, 1053)]