28553715

素因数分解:

$3^5\times 5^1\times {\mathrm{71}}^1\times {\mathrm{331}}^1$

素因数の和:422

約数の個数: 48

約数和(自身を含む): 52206336

約数和(自身を除く): 23652621

約数列:

[1, 3, 5, 9, 15, 27, 45, 71, 81, 135, 213, 243, 331, 355, 405, 639, 993, 1065, 1215, 1655, 1917, 2979, 3195, 4965, 5751, 8937, 9585, 14895, 17253, 23501, 26811, 28755, 44685, 70503, 80433, 86265, 117505, 134055, 211509, 352515, 402165, 634527, 1057545, 1903581, 3172635, 5710743, 9517905, 28553715]

約数ペア:

[(1, 28553715), (3, 9517905), (5, 5710743), (9, 3172635), (15, 1903581), (27, 1057545), (45, 634527), (71, 402165), (81, 352515), (135, 211509), (213, 134055), (243, 117505), (331, 86265), (355, 80433), (405, 70503), (639, 44685), (993, 28755), (1065, 26811), (1215, 23501), (1655, 17253), (1917, 14895), (2979, 9585), (3195, 8937), (4965, 5751)]