21450753

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{157}}^1$

素因数の和:246

約数の個数: 48

約数和(自身を含む): 35493120

約数和(自身を除く): 14042367

約数列:

[1, 3, 9, 17, 19, 47, 51, 57, 141, 153, 157, 171, 323, 423, 471, 799, 893, 969, 1413, 2397, 2669, 2679, 2907, 2983, 7191, 7379, 8007, 8037, 8949, 15181, 22137, 24021, 26847, 45543, 50711, 66411, 125443, 136629, 140201, 152133, 376329, 420603, 456399, 1128987, 1261809, 2383417, 7150251, 21450753]

約数ペア:

[(1, 21450753), (3, 7150251), (9, 2383417), (17, 1261809), (19, 1128987), (47, 456399), (51, 420603), (57, 376329), (141, 152133), (153, 140201), (157, 136629), (171, 125443), (323, 66411), (423, 50711), (471, 45543), (799, 26847), (893, 24021), (969, 22137), (1413, 15181), (2397, 8949), (2669, 8037), (2679, 8007), (2907, 7379), (2983, 7191)]