19987188

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{4133}}^1$

素因数の和:4184

約数の個数: 48

約数和(自身を含む): 51856896

約数和(自身を除く): 31869708

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 31, 39, 52, 62, 78, 93, 124, 156, 186, 372, 403, 806, 1209, 1612, 2418, 4133, 4836, 8266, 12399, 16532, 24798, 49596, 53729, 107458, 128123, 161187, 214916, 256246, 322374, 384369, 512492, 644748, 768738, 1537476, 1665599, 3331198, 4996797, 6662396, 9993594, 19987188]

約数ペア:

[(1, 19987188), (2, 9993594), (3, 6662396), (4, 4996797), (6, 3331198), (12, 1665599), (13, 1537476), (26, 768738), (31, 644748), (39, 512492), (52, 384369), (62, 322374), (78, 256246), (93, 214916), (124, 161187), (156, 128123), (186, 107458), (372, 53729), (403, 49596), (806, 24798), (1209, 16532), (1612, 12399), (2418, 8266), (4133, 4836)]