81231790

素因数分解:

$2^1\times 5^1\times {\mathrm{59}}^1\times {\mathrm{131}}^1\times {\mathrm{1051}}^1$

素因数の和:1248

約数の個数: 32

約数和(自身を含む): 149973120

約数和(自身を除く): 68741330

約数列:

[1, 2, 5, 10, 59, 118, 131, 262, 295, 590, 655, 1051, 1310, 2102, 5255, 7729, 10510, 15458, 38645, 62009, 77290, 124018, 137681, 275362, 310045, 620090, 688405, 1376810, 8123179, 16246358, 40615895, 81231790]

約数ペア:

[(1, 81231790), (2, 40615895), (5, 16246358), (10, 8123179), (59, 1376810), (118, 688405), (131, 620090), (262, 310045), (295, 275362), (590, 137681), (655, 124018), (1051, 77290), (1310, 62009), (2102, 38645), (5255, 15458), (7729, 10510)]