21305556

素因数分解:

$2^2\times 3^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{1123}}^1$

素因数の和:1181

約数の個数: 72

約数和(自身を含む): 58915584

約数和(自身を除く): 37610028

約数列:

[1, 2, 3, 4, 6, 9, 12, 17, 18, 31, 34, 36, 51, 62, 68, 93, 102, 124, 153, 186, 204, 279, 306, 372, 527, 558, 612, 1054, 1116, 1123, 1581, 2108, 2246, 3162, 3369, 4492, 4743, 6324, 6738, 9486, 10107, 13476, 18972, 19091, 20214, 34813, 38182, 40428, 57273, 69626, 76364, 104439, 114546, 139252, 171819, 208878, 229092, 313317, 343638, 417756, 591821, 626634, 687276, 1183642, 1253268, 1775463, 2367284, 3550926, 5326389, 7101852, 10652778, 21305556]

約数ペア:

[(1, 21305556), (2, 10652778), (3, 7101852), (4, 5326389), (6, 3550926), (9, 2367284), (12, 1775463), (17, 1253268), (18, 1183642), (31, 687276), (34, 626634), (36, 591821), (51, 417756), (62, 343638), (68, 313317), (93, 229092), (102, 208878), (124, 171819), (153, 139252), (186, 114546), (204, 104439), (279, 76364), (306, 69626), (372, 57273), (527, 40428), (558, 38182), (612, 34813), (1054, 20214), (1116, 19091), (1123, 18972), (1581, 13476), (2108, 10107), (2246, 9486), (3162, 6738), (3369, 6324), (4492, 4743)]