19703439

素因数分解:

$3^3\times 7^2\times {\mathrm{53}}^1\times {\mathrm{281}}^1$

素因数の和:357

約数の個数: 48

約数和(自身を含む): 34719840

約数和(自身を除く): 15016401

約数列:

[1, 3, 7, 9, 21, 27, 49, 53, 63, 147, 159, 189, 281, 371, 441, 477, 843, 1113, 1323, 1431, 1967, 2529, 2597, 3339, 5901, 7587, 7791, 10017, 13769, 14893, 17703, 23373, 41307, 44679, 53109, 70119, 104251, 123921, 134037, 312753, 371763, 402111, 729757, 938259, 2189271, 2814777, 6567813, 19703439]

約数ペア:

[(1, 19703439), (3, 6567813), (7, 2814777), (9, 2189271), (21, 938259), (27, 729757), (49, 402111), (53, 371763), (63, 312753), (147, 134037), (159, 123921), (189, 104251), (281, 70119), (371, 53109), (441, 44679), (477, 41307), (843, 23373), (1113, 17703), (1323, 14893), (1431, 13769), (1967, 10017), (2529, 7791), (2597, 7587), (3339, 5901)]