21389706

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{283}}^1$

素因数の和:340

約数の個数: 96

約数和(自身を含む): 55823040

約数和(自身を除く): 34433334

約数列:

[1, 2, 3, 6, 9, 13, 17, 18, 19, 26, 34, 38, 39, 51, 57, 78, 102, 114, 117, 153, 171, 221, 234, 247, 283, 306, 323, 342, 442, 494, 566, 646, 663, 741, 849, 969, 1326, 1482, 1698, 1938, 1989, 2223, 2547, 2907, 3679, 3978, 4199, 4446, 4811, 5094, 5377, 5814, 7358, 8398, 9622, 10754, 11037, 12597, 14433, 16131, 22074, 25194, 28866, 32262, 33111, 37791, 43299, 48393, 62543, 66222, 69901, 75582, 86598, 91409, 96786, 125086, 139802, 182818, 187629, 209703, 274227, 375258, 419406, 548454, 562887, 629109, 822681, 1125774, 1188317, 1258218, 1645362, 2376634, 3564951, 7129902, 10694853, 21389706]

約数ペア:

[(1, 21389706), (2, 10694853), (3, 7129902), (6, 3564951), (9, 2376634), (13, 1645362), (17, 1258218), (18, 1188317), (19, 1125774), (26, 822681), (34, 629109), (38, 562887), (39, 548454), (51, 419406), (57, 375258), (78, 274227), (102, 209703), (114, 187629), (117, 182818), (153, 139802), (171, 125086), (221, 96786), (234, 91409), (247, 86598), (283, 75582), (306, 69901), (323, 66222), (342, 62543), (442, 48393), (494, 43299), (566, 37791), (646, 33111), (663, 32262), (741, 28866), (849, 25194), (969, 22074), (1326, 16131), (1482, 14433), (1698, 12597), (1938, 11037), (1989, 10754), (2223, 9622), (2547, 8398), (2907, 7358), (3679, 5814), (3978, 5377), (4199, 5094), (4446, 4811)]