215231373

素因数分解:

$3^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1511}}^1$

素因数の和:1567

約数の個数: 72

約数和(自身を含む): 403341120

約数和(自身を除く): 188109747

約数列:

[1, 3, 7, 9, 17, 19, 21, 49, 51, 57, 63, 119, 133, 147, 153, 171, 323, 357, 399, 441, 833, 931, 969, 1071, 1197, 1511, 2261, 2499, 2793, 2907, 4533, 6783, 7497, 8379, 10577, 13599, 15827, 20349, 25687, 28709, 31731, 47481, 74039, 77061, 86127, 95193, 142443, 179809, 200963, 222117, 231183, 258381, 488053, 539427, 602889, 666351, 1258663, 1406741, 1464159, 1618281, 1808667, 3416371, 3775989, 4220223, 4392477, 10249113, 11327967, 12660669, 23914597, 30747339, 71743791, 215231373]

約数ペア:

[(1, 215231373), (3, 71743791), (7, 30747339), (9, 23914597), (17, 12660669), (19, 11327967), (21, 10249113), (49, 4392477), (51, 4220223), (57, 3775989), (63, 3416371), (119, 1808667), (133, 1618281), (147, 1464159), (153, 1406741), (171, 1258663), (323, 666351), (357, 602889), (399, 539427), (441, 488053), (833, 258381), (931, 231183), (969, 222117), (1071, 200963), (1197, 179809), (1511, 142443), (2261, 95193), (2499, 86127), (2793, 77061), (2907, 74039), (4533, 47481), (6783, 31731), (7497, 28709), (8379, 25687), (10577, 20349), (13599, 15827)]