81221427

素因数分解:

$3^3\times 7^1\times {\mathrm{17}}^2\times {\mathrm{1487}}^1$

素因数の和:1537

約数の個数: 48

約数和(自身を含む): 146181120

約数和(自身を除く): 64959693

約数列:

[1, 3, 7, 9, 17, 21, 27, 51, 63, 119, 153, 189, 289, 357, 459, 867, 1071, 1487, 2023, 2601, 3213, 4461, 6069, 7803, 10409, 13383, 18207, 25279, 31227, 40149, 54621, 75837, 93681, 176953, 227511, 281043, 429743, 530859, 682533, 1289229, 1592577, 3008201, 3867687, 4777731, 9024603, 11603061, 27073809, 81221427]

約数ペア:

[(1, 81221427), (3, 27073809), (7, 11603061), (9, 9024603), (17, 4777731), (21, 3867687), (27, 3008201), (51, 1592577), (63, 1289229), (119, 682533), (153, 530859), (189, 429743), (289, 281043), (357, 227511), (459, 176953), (867, 93681), (1071, 75837), (1487, 54621), (2023, 40149), (2601, 31227), (3213, 25279), (4461, 18207), (6069, 13383), (7803, 10409)]