20388753

素因数分解:

$3^4\times 7^2\times {\mathrm{11}}^1\times {\mathrm{467}}^1$

素因数の和:504

約数の個数: 60

約数和(自身を含む): 38733552

約数和(自身を除く): 18344799

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 49, 63, 77, 81, 99, 147, 189, 231, 297, 441, 467, 539, 567, 693, 891, 1323, 1401, 1617, 2079, 3269, 3969, 4203, 4851, 5137, 6237, 9807, 12609, 14553, 15411, 22883, 29421, 35959, 37827, 43659, 46233, 68649, 88263, 107877, 138699, 205947, 251713, 264789, 323631, 416097, 617841, 755139, 970893, 1853523, 2265417, 2912679, 6796251, 20388753]

約数ペア:

[(1, 20388753), (3, 6796251), (7, 2912679), (9, 2265417), (11, 1853523), (21, 970893), (27, 755139), (33, 617841), (49, 416097), (63, 323631), (77, 264789), (81, 251713), (99, 205947), (147, 138699), (189, 107877), (231, 88263), (297, 68649), (441, 46233), (467, 43659), (539, 37827), (567, 35959), (693, 29421), (891, 22883), (1323, 15411), (1401, 14553), (1617, 12609), (2079, 9807), (3269, 6237), (3969, 5137), (4203, 4851)]