20838895

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{479}}^1$

素因数の和:615

約数の個数: 32

約数和(自身を含む): 31518720

約数和(自身を除く): 10679825

約数列:

[1, 5, 7, 11, 35, 55, 77, 113, 385, 479, 565, 791, 1243, 2395, 3353, 3955, 5269, 6215, 8701, 16765, 26345, 36883, 43505, 54127, 184415, 270635, 378889, 595397, 1894445, 2976985, 4167779, 20838895]

約数ペア:

[(1, 20838895), (5, 4167779), (7, 2976985), (11, 1894445), (35, 595397), (55, 378889), (77, 270635), (113, 184415), (385, 54127), (479, 43505), (565, 36883), (791, 26345), (1243, 16765), (2395, 8701), (3353, 6215), (3955, 5269)]