16781385

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{151}}^1\times {\mathrm{239}}^1$

素因数の和:429

約数の個数: 32

約数和(自身を含む): 28016640

約数和(自身を除く): 11235255

約数列:

[1, 3, 5, 15, 31, 93, 151, 155, 239, 453, 465, 717, 755, 1195, 2265, 3585, 4681, 7409, 14043, 22227, 23405, 36089, 37045, 70215, 108267, 111135, 180445, 541335, 1118759, 3356277, 5593795, 16781385]

約数ペア:

[(1, 16781385), (3, 5593795), (5, 3356277), (15, 1118759), (31, 541335), (93, 180445), (151, 111135), (155, 108267), (239, 70215), (453, 37045), (465, 36089), (717, 23405), (755, 22227), (1195, 14043), (2265, 7409), (3585, 4681)]