21554906015

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1\times {\mathrm{10979}}^1$

素因数の和:11243

約数の個数: 32

約数和(自身を含む): 27105140160

約数和(自身を除く): 5550234145

約数列:

[1, 5, 41, 61, 157, 205, 305, 785, 2501, 6437, 9577, 10979, 12505, 32185, 47885, 54895, 392657, 450139, 669719, 1723703, 1963285, 2250695, 3348595, 8618515, 27458479, 70671823, 105145883, 137292395, 353359115, 525729415, 4310981203, 21554906015]

約数ペア:

[(1, 21554906015), (5, 4310981203), (41, 525729415), (61, 353359115), (157, 137292395), (205, 105145883), (305, 70671823), (785, 27458479), (2501, 8618515), (6437, 3348595), (9577, 2250695), (10979, 1963285), (12505, 1723703), (32185, 669719), (47885, 450139), (54895, 392657)]