21056555079

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1034771}}^1$

素因数の和:1034820

約数の個数: 48

約数和(自身を含む): 38741863680

約数和(自身を除く): 17685308601

約数列:

[1, 3, 7, 9, 17, 19, 21, 51, 57, 63, 119, 133, 153, 171, 323, 357, 399, 969, 1071, 1197, 2261, 2907, 6783, 20349, 1034771, 3104313, 7243397, 9312939, 17591107, 19660649, 21730191, 52773321, 58981947, 65190573, 123137749, 137624543, 158319963, 176945841, 334231033, 369413247, 412873629, 1002693099, 1108239741, 1238620887, 2339617231, 3008079297, 7018851693, 21056555079]

約数ペア:

[(1, 21056555079), (3, 7018851693), (7, 3008079297), (9, 2339617231), (17, 1238620887), (19, 1108239741), (21, 1002693099), (51, 412873629), (57, 369413247), (63, 334231033), (119, 176945841), (133, 158319963), (153, 137624543), (171, 123137749), (323, 65190573), (357, 58981947), (399, 52773321), (969, 21730191), (1071, 19660649), (1197, 17591107), (2261, 9312939), (2907, 7243397), (6783, 3104313), (20349, 1034771)]