81537261

素因数分解:

$3^1\times {\mathrm{13}}^3\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:270

約数の個数: 32

約数和(自身を含む): 119952000

約数和(自身を除く): 38414739

約数列:

[1, 3, 13, 39, 89, 139, 169, 267, 417, 507, 1157, 1807, 2197, 3471, 5421, 6591, 12371, 15041, 23491, 37113, 45123, 70473, 160823, 195533, 305383, 482469, 586599, 916149, 2090699, 6272097, 27179087, 81537261]

約数ペア:

[(1, 81537261), (3, 27179087), (13, 6272097), (39, 2090699), (89, 916149), (139, 586599), (169, 482469), (267, 305383), (417, 195533), (507, 160823), (1157, 70473), (1807, 45123), (2197, 37113), (3471, 23491), (5421, 15041), (6591, 12371)]