21357380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{193}}^1\times {\mathrm{503}}^1$

素因数の和:716

約数の個数: 48

約数和(自身を含む): 49279104

約数和(自身を除く): 27921724

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 193, 220, 386, 503, 772, 965, 1006, 1930, 2012, 2123, 2515, 3860, 4246, 5030, 5533, 8492, 10060, 10615, 11066, 21230, 22132, 27665, 42460, 55330, 97079, 110660, 194158, 388316, 485395, 970790, 1067869, 1941580, 2135738, 4271476, 5339345, 10678690, 21357380]

約数ペア:

[(1, 21357380), (2, 10678690), (4, 5339345), (5, 4271476), (10, 2135738), (11, 1941580), (20, 1067869), (22, 970790), (44, 485395), (55, 388316), (110, 194158), (193, 110660), (220, 97079), (386, 55330), (503, 42460), (772, 27665), (965, 22132), (1006, 21230), (1930, 11066), (2012, 10615), (2123, 10060), (2515, 8492), (3860, 5533), (4246, 5030)]