81910990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37747}}^1$

素因数の和:37792

約数の個数: 32

約数和(自身を含む): 173942784

約数和(自身を除く): 92031794

約数列:

[1, 2, 5, 7, 10, 14, 31, 35, 62, 70, 155, 217, 310, 434, 1085, 2170, 37747, 75494, 188735, 264229, 377470, 528458, 1170157, 1321145, 2340314, 2642290, 5850785, 8191099, 11701570, 16382198, 40955495, 81910990]

約数ペア:

[(1, 81910990), (2, 40955495), (5, 16382198), (7, 11701570), (10, 8191099), (14, 5850785), (31, 2642290), (35, 2340314), (62, 1321145), (70, 1170157), (155, 528458), (217, 377470), (310, 264229), (434, 188735), (1085, 75494), (2170, 37747)]