81863355

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1$

素因数の和:304

約数の個数: 64

約数和(自身を含む): 154828800

約数和(自身を除く): 72965445

約数列:

[1, 3, 5, 7, 15, 21, 35, 71, 79, 105, 139, 213, 237, 355, 395, 417, 497, 553, 695, 973, 1065, 1185, 1491, 1659, 2085, 2485, 2765, 2919, 4865, 5609, 7455, 8295, 9869, 10981, 14595, 16827, 28045, 29607, 32943, 39263, 49345, 54905, 69083, 76867, 84135, 117789, 148035, 164715, 196315, 207249, 230601, 345415, 384335, 588945, 779651, 1036245, 1153005, 2338953, 3898255, 5457557, 11694765, 16372671, 27287785, 81863355]

約数ペア:

[(1, 81863355), (3, 27287785), (5, 16372671), (7, 11694765), (15, 5457557), (21, 3898255), (35, 2338953), (71, 1153005), (79, 1036245), (105, 779651), (139, 588945), (213, 384335), (237, 345415), (355, 230601), (395, 207249), (417, 196315), (497, 164715), (553, 148035), (695, 117789), (973, 84135), (1065, 76867), (1185, 69083), (1491, 54905), (1659, 49345), (2085, 39263), (2485, 32943), (2765, 29607), (2919, 28045), (4865, 16827), (5609, 14595), (7455, 10981), (8295, 9869)]