81931605

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{25171}}^1$

素因数の和:25217

約数の個数: 32

約数和(自身を含む): 154656768

約数和(自身を除く): 72725163

約数列:

[1, 3, 5, 7, 15, 21, 31, 35, 93, 105, 155, 217, 465, 651, 1085, 3255, 25171, 75513, 125855, 176197, 377565, 528591, 780301, 880985, 2340903, 2642955, 3901505, 5462107, 11704515, 16386321, 27310535, 81931605]

約数ペア:

[(1, 81931605), (3, 27310535), (5, 16386321), (7, 11704515), (15, 5462107), (21, 3901505), (31, 2642955), (35, 2340903), (93, 880985), (105, 780301), (155, 528591), (217, 377565), (465, 176197), (651, 125855), (1085, 75513), (3255, 25171)]