21569301

素因数分解:

$3^3\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{163}}^1$

素因数の和:227

約数の個数: 48

約数和(自身を含む): 36014400

約数和(自身を除く): 14445099

約数列:

[1, 3, 9, 13, 27, 29, 39, 87, 117, 163, 169, 261, 351, 377, 489, 507, 783, 1131, 1467, 1521, 2119, 3393, 4401, 4563, 4727, 4901, 6357, 10179, 14181, 14703, 19071, 27547, 42543, 44109, 57213, 61451, 82641, 127629, 132327, 184353, 247923, 553059, 743769, 798863, 1659177, 2396589, 7189767, 21569301]

約数ペア:

[(1, 21569301), (3, 7189767), (9, 2396589), (13, 1659177), (27, 798863), (29, 743769), (39, 553059), (87, 247923), (117, 184353), (163, 132327), (169, 127629), (261, 82641), (351, 61451), (377, 57213), (489, 44109), (507, 42543), (783, 27547), (1131, 19071), (1467, 14703), (1521, 14181), (2119, 10179), (3393, 6357), (4401, 4901), (4563, 4727)]